Slightly more complicated than that!!!
Sweden's SKF brand
1. Interior design
ACD - contact angle of 25 degrees.
B - contact angle of 40 degrees.
CC - a contact angle of 12 degrees.
CD - contact angle of 15 degrees.
BE - contact angle of 40 degrees BE-type bearings, ball up, with glass fiber reinforced polyamide 6.6 cage.
v double row angular contact ball bearings
A - 90 mm outer diameter less than or equal bearing of standard design, are not equipped with the ball gap, glass fiber reinforced polyamide 6.6 cage.
E - loaded ball bearing side of the mouth can be installed more balls, so with high radial and axial load capacity.
v-aligning roller bearings
CAC, ECAC, CA, ECA - those designed for large size bearings, roller symmetrical type.
CC, C, EC - such was symmetrical roller bearings, inner ring without ribs.
E - SKF companies are using the latest standard design. E-type bearing outer ring with a tank and three hole, the post code to be added in the W, to show distinction.
v cylindrical roller bearings
B - surface-treated bearing roller (filled roller bearings).
B4 - Roller Bearing surfaces and surfaces treated (filled roller bearings).
EC - bearing internal geometry, the improved, higher carrying capacity, flange and roller end contact and good lubrication conditions, can withstand high axial loads.
2. External design
CA, CB, CC - Universal matching single row angular contact ball bearings, can be arbitrary (in series, face to face or back to back) paired installed. Back to back or face to face arrangement, the axial internal clearance before installation, and normal ratio: small (CA), normal (CB), large (CC).
-2F - insert ball bearings on both sides of the dust ring with rejection.
-2FF - insert ball bearings on both sides of the dust ring with a combination of rejection.
G - General Matching single row angular contact ball bearings. Face to face or back to back arrangement, the bearing has some pre-load before installation.
GA - face to face, back to back arrangement, the bearing pre-load with a lighter.
GB - face to face, back to back arrangement, the bearing pre-load moderate.
GC - face to face, back to back arrangement, the bearing pre-load with a heavier.
K - Tapered bore, taper 1:12.
K30 - tapered bore, taper 1:30.
-LS - side bearing with contact seals, no inner seal groove.
-2LS - bearing sealed on both sides with LS.
N - bearing outer ring on a groove.
NR - bearing outer ring there are only fixed slot and a stop ring.
N2 - There are two chamfered outer diameter direction relative notch.
PP - bearing (bearing roller bearings, cam follower bearing) with contact seals on both sides.
RS - bearing (needle bearing) side of a synthetic rubber or polyurethane-contact seal.
-RS1 - bearing side plate has a rubber lining contact seals.
-2RS1 - bearing sealed on both sides with RS1.
-2RS - Bearings (needle bearings) sealed on both sides with the RS.
-RZ - bearing side lining plate with low-friction synthetic rubber seal.
-2RZ - bearing sealed on both sides with RZ.
X - basic dimensions, as amended to conform to ISO standards; cylindrical rolling surface (bearing roller bearings, cam follower bearing).
Z - bearing side with the dust cover (non-friction seal).
-2Z - bearing both sides with dust cover.
-ZN - bearing side with the dust cover, the other side of the outer ring has groove.
-2ZN - bearing both sides with dust cover, the outer ring has groove.
-ZNR - with-ZN, and with a stop ring.
-2ZNR - with-2ZN, and with the stop ring.
3. Retainer
In order to show that the bearing cage guide way, the post holder may follow the letter code A or B. A said cage from the outer boot; B said cage from the inner guide. No representation cage guided by the ball.
F - special cast iron, steel or solid cage.
J - steel stamping cage.
M - light alloy solid cage.
MP - solid brass cage.
P - Glass Fiber Nylon 6.6 injection mold cage.
TN - plastic mold injection cage.
Y - copper metal forming cage.
V - full roller bearings (no cage).
VH - Separate from the non-roller assembly consisting of full roller bearings (cylindrical roller bearings).
4. Other features
1. Tolerance Level
/ CLN - equivalent to ISO tolerance class 6X, for the metric tapered roller bearings (width tolerances are lower).
/ CL0 - the equivalent of ISO0 level tolerances for inch tapered roller bearings.
/ CL3 - the equivalent of ISO3 level tolerances for inch tapered roller bearings.
/ CL7A - consistent with the differential bearing configuration standard tapered roller bearings.
/ CL7C - meet the standard differential bearing configuration special tapered roller bearings.
/ P4 - size and rotation accuracy level consistent with ISO4 tolerance (precision than P5).
/ P4A - ISO4 level tolerance consistent dimensional accuracy, rotation accuracy equivalent to the standard ABEC9 AFBMA level.
/ P5 - line ISO5 class size rotary precision tolerances (accuracy is higher than P6).
/ PA9A - size and rotation accuracy equivalent to the standard ABEC9 AFBMA level.
/ PA9B - dimensional accuracy equivalent to the standard ABEC9 AFBMA, rotation accuracy is higher than PA9A.
/ SP - dimensional accuracy of about P5, rotation accuracy is about P4.
/ UP - dimensional accuracy of about P4, rotation accuracy is higher than P4.
2. Bearing Clearance
/ C1 - Clearance of the standard provisions of a group, clearance was less than 2 groups.
/ C2 - Clearance meet the standard requirements of the two groups, group clearance is less than 0.
/ C0 - Clearance of the standard requirements of the 0 group, code-named the omission, does not mean that.
/ C3 - Clearance meet the standard requirements of the 3 groups, clearance is greater than 0 groups.
/ C4 - Clearance meet the standard requirements of the 4 groups, clearance is greater than 3 groups.
/ C5 - Clearance meet the standard requirements of the 5 groups, clearance than 4 groups.
When the bearing clearance tolerance level code and code P4, P5 or P6 when combined, clearance code C can be omitted.
Cases: P6 + C2 = P62
3. Special technical requirements
/ Q - the best internal geometry and the surface roughness (for tapered roller bearings).
/ Q66 - less than the ordinary level standard vibration level, vibration peak is less than normal standard.
/ QE5 - meet the motor with a special standard, size and rotation accuracy of P6. Very low noise.
/ QE6 - meet the standard motor and low noise.
4. Bearing configuration
/ DB - the two can be paired single row deep groove ball bearings, single row angular contact ball bearings or single row tapered roller bearings installed in pairs back to back manner. DB digits after the size of the axial clearance or pre-load size of the installation.
A - Light Pre-load (angular contact ball bearings).
B - A large pre-load ratio (angular contact ball bearings).
C - pre-load than the B-(angular contact ball bearings).
CA - internal clearance less (deep groove or angular contact ball bearings).
CB - CA internal clearance than the large (deep groove or angular contact ball bearings).
CC - CB internal clearance than the large (deep groove ball bearing).
CG - "Zero" clearance (tapered roller bearings).
C ... - special CC axial internal clearance behind the numbers indicate the size of the axial clearance.
GA - less pre-load (deep groove ball bearing).
GB - pre-load is greater than CA (deep groove ball bearing).
G ... - special pre-load (G behind the numbers indicate the size of pre-load).
/ DF - Two separate pairs, arranged in face to face, deep groove ball bearings, single row angular contact ball bearings or single row tapered roller bearings. DF and DB back to after with the same letters.
/ DT - Two pairs, arranged in series deep groove ball bearings, single row angular contact ball bearings or single row tapered roller bearings.
5. Treatment
Inside and outside the ring bearing size stabilized, may run in the following temperatures:
/ S0 - up to 150 degrees Celsius.
/ S1 - up to 200 degrees Celsius.
/ S2 - up to 250 degrees Celsius.
/ S3 - up to 300 degrees Celsius.
/ S4 - up to 350 degrees Celsius.
6. Lubricant added
/ W - can not add oil (no oil tank and the hole).
/ W20 - bearing outer ring with three lubrication holes.
/ W33 - bearing outer ring with lubrication groove and three hole.
/ W33X - bearing outer ring with lubrication grooves and six hole.
7. Lubricants
Bearing grease used to identify the type of post filled by a letter code group and the two numbers, letters, said temperature range, the next two numbers indicate the actual use of grease, common letter groups are as follows:
/ HT - high temperature grease (-20 degrees C ~ +130 degrees Celsius).
/ LHT - low / high temperature grease (-40 degrees C ~ +140 degrees Celsius).
/ LT - low temperature grease (-50 degrees C ~ +80 degrees Celsius).
/ MT - Medium Temperature Grease (-30 degrees C ~ +110 degrees Celsius).
MT that particular post code using non-standard bearing grease. Amount of bearing grease filled with the standard amount (bearing the internal free space of 25% to 30%) not at the same time, by an additional letter of recognition:
A: amount less than the standard amount of grease.
B: grease content than the standard amount.
C: grease content was larger than B.
8. Other features
Letter V and the other letters (such as the VA) and the combination of three numbers, used to identify other existing post can not express the standard design code-named variants. Such as:
/ VA201 - kiln car bearings.
/ VA301 - traction motor with a cylindrical roller bearings.
Germany's FAG brand
1. Internal structure
A, B, C, D, E the internal structure change
Example 1: angular contact ball bearings 7205C, 7205E, 7205B, C-15 ° contact angle, E-25 degree contact angle, B-40 degree contact angle.
Example 2: cylindrical roller, spherical roller and spherical roller thrust bearings N309E, 21309E, 29412E-enhanced design, bearing load capacity to improve.
VH-roller locking the full roller cylindrical roller bearings (roller diameter complex is different from the standard bearing the same model). Cases: NJ2312VH
2. Bearing dimensions and external structure
DA-Double semi-detachable inner double row angular contact ball bearings. Cases: 3306DA
DZ-cylindrical outer diameter of the wheel bearings. Cases: ST017DZ
K-tapered bore bearing, taper 1 / 12. Cases: 2308K.
K30-tapered bore bearing, taper 1:30. Cases: 24040K30.
2LS-double inner ring, with a dust cover both sides of the double row cylindrical roller bearings. Cases: NNF5026C.2LS.V-internal structural changes, two inner, two with a dust cover, full roller Double row cylindrical roller bearings.
N-outer ring with slots on the bearing. Cases: 6207N.
NR-outer ring with groove and snap ring bearings. Cases: 6207NR.
N2-outer ring with two slots on the four-point contact ball bearings. Cases: QJ315N2.
S-outer ring with lubrication groove and three lubrication holes in the bearings. Cases: 23040S. Bearing outside diameter D greater than equal to 320 mm of spherical roller bearings are not marked S.
X-Overall dimensions in line with international standards. Cases: 32036X.
Z. .- special structure of the technical conditions. Turn down the arranged starting from the Z11. Cases: Z15-stainless steel bearings (W-N01.3541..
ZZ-roller bearing outer ring of the ring with two lead.
3. Sealing and dust
RSR-bearing side with a ring. Cases: 6207.RSR.
ZR-bearing side with a dust cover. Cases: 6207.ZR.
2ZR-bearing both sides with sealing lid. Cases: 6207.2ZR.
ZRN-bearing side with a dust cover, the other side of the outer ring with a groove. Cases: 6207.ZRN.
2ZRN-bearing sides with a dust cover, the outer ring with a groove. Cases: 6207.2ZRN.
4. Cage and materials
1. Solid Cage
A or B after the code placed in the cage, A, said cage outer ring guide, B, said cage inner guidance.
F-steel solid cage, ball guide.
FA-steel solid cage, outer boot.
FAS-steel solid cage, outer ring guide, with a lubrication groove.
FB-steel solid cage, the inner guide.
FBS-steel solid cage, inner guidance, with a lubrication groove.
FH-steel solid cage, after carburizing and quenching.
H, H1-carburized cage.
FP-steel solid window type cage.
FPA-steel solid window type cage, outer boot.
FPB-steel solid window-type cage, the inner guide.
FV, FV1-steel cage fenestrae entity, by aging, quenching.
L-light metal solid cage, ball guide.
LA-light metal solid cage, outer boot.
LAS-light metal solid cage, outer ring guide, with a lubrication groove.
LB-light metal solid cage, the inner guide.
LBS-light metal solid cage, inner guidance, with a lubrication groove.
LP-light metal solid window type cage.
LPA-light metal solid window type cage, outer boot.
LPB-light metal solid window type cage, the inner guide (thrust roller bearing axle boot).
M, M1-brass solid cage.
MA-brass solid cage, outer boot.
MAS-brass solid cage, outer ring guide, with a lubrication groove.
MB-brass solid cage, the inner guide (Thrust roller bearing axle ring boot).
MBS-brass solid cage, inner guidance, with a lubrication groove.
MP-pocket straight solid brass cage.
MPA-pocket straight solid brass cage, outer boot.
MPB-pocket straight solid brass cage, inner guide.
T-phenolic cloth laminated tube solid cage, ball guide.
Phenolic cloth laminated tube TA-solid cage, outer boot.
TB-phenolic cloth laminated tube solid cage, the inner guide.
THB-phenolic cloth laminated tube pocket hole cage, inner guidance.
TP-phenolic cloth laminated tube straight Pockets cage.
TPA-phenolic cloth laminated tube straight Pockets cage, outer boot.
TPB-phenolic cloth laminated tube straight Pockets cage, inner guidance.
TN-plastic mold injection cage, ball guide, with additional numbers indicate the different materials.
TNH-plastic self-locking pocket hole cage.
TV-glass fiber reinforced polyamide solid cage, ball guide.
TVH-glass fiber reinforced polyamide from the lock pocket groove solid cage, ball guide.
TVP-glass fiber reinforced polyamide Window solid cage, ball guide.
TVP2-glass fiber reinforced polyamide solid cage, roller guide.
TVPB-glass fiber reinforced polyamide solid cage, the inner guide (thrust roller bearing axle boot).
TVPB1-glass fiber reinforced polyamide solid window-type cage, shaft guide (thrust roller bearings).
2. Stamping cage
J-steel stamping cage.
JN-deep groove ball bearings riveted cage.
3. Cage change
After the code added to the cage, or inserted in middle of the cage code number cage structures that change. These figures are only for the transition period, patients: NU1008M1.
5. No Cage
V-full of loaded rolling bearings. Cases: NU207V.
VT-band isolation ball or roller filled rolling bearings. Cases: 51120VT.
6. Tolerance level (including dimensional accuracy and precision of rotation)
P0-tolerance class in accordance with international standards ISO provided 0, code is omitted, does not mean that.
P6-tolerance class in accordance with international standards ISO requirements 6.
P6X-tolerance class in accordance with international standards under ISO 6X class tapered roller bearings.
P5-tolerance class in accordance with international standards ISO under 5.
P4-tolerance class in accordance with international standards ISO 4 under.
P2-Tolerance class in accordance with international standards ISO of two (excluding tapered roller bearings).
SP-dimensional accuracy equivalent to 5, rotation accuracy equivalent to 4 (double row cylindrical roller bearings).
UP-dimensional accuracy equivalent to 4, rotation accuracy is higher than 4 (double row cylindrical roller bearings).
HG-dimensional accuracy equivalent to 4, rotation accuracy is higher than 4, less than two (spindle bearings).
7. Clearance
C1-standard clearance requirements of a group, less than 2 groups.
C2-clearance under a standard group 2, less than 0 groups.
C0-standard clearance requirements of the 0 group, code-named the omission, does not mean that.
C3-Clearance meet the standard requirements of the three groups, greater than 0 groups.
C4-Clearance meet the standard requirements of the four groups, more than 3 groups.
C5-standard clearance requirements of 5 groups, more than 4 groups.
1. Tolerance class code and the code required clearance also said that when the tolerance level to code (P0-class does not mean that) plus the clearance group number (0 groups does not mean) combination, said.
Cases: P63 = P6 + C3, said bearing tolerance class P6 level, radial clearance 3 groups.
2. Non-standard clearance, requiring special radial clearance and axial clearance of the case, the limit should be the letter R (radial clearance) or A (axial clearance), said after the use of micron, use of small dots between the numbers.
Cases: 6210.R10.20 that 6210 bearings, radial clearance of 10 microns to 20 microns.
8. Test bearing noise
F3-low-noise bearings. Mainly refers to the cylindrical roller bearings and inner diameter d greater than 60 mm or more deep groove ball bearings. Cases: 6213.F3.
G-low-noise bearings. Mainly refers to the diameter d less than equal to 60 mm deep groove ball bearings. Cases: 6207.G.
9. Heat
S0-Bearing tempering at high temperatures, the working temperature of up to 150 degrees Celsius.
S1-Bearing tempering at high temperatures, the working temperature of up to 200 degrees Celsius.
S2-Bearing tempering at high temperatures, the working temperature of up to 250 degrees Celsius.
S3-Bearing tempering at high temperatures, the working temperature of up to 300 degrees Celsius.
S4-Bearing tempering at high temperatures, the working temperature of up to 350 degrees Celsius.
10. Special technical requirements
F. .- consecutive number of manufacturing and technical conditions. Cases: F80-bearing, the diameter tolerance and the radial clearance compression.
K. .- check the technical conditions for consecutive numbers. Cases: K5-bearing, the diameter tolerance of compression.
. ZB-diameter greater than 80 mm above the convexity of the cylindrical roller. Cases: NU364.ZB.
. ZB2-needle at both ends of the convexity is greater than the general technical requirements. Cases: K18 * 26 * 20F.ZB2.
ZW-double row needle roller and cage assemblies. Cases: K20 * 25 * 40FZW.
.700 ... To 700,000 at the beginning of the continuous number of technical conditions.
Z52JN.790144-bearing can be used for high temperature and low speed, with a special heat treatment, steel stamping Riveting cage, large clearance by phosphate treatment, injection oil, using the temperature can exceed 270 degrees Celsius.
Z52JN.790191-bearing can be used for high temperature and low speed, through a special heat treatment, steel stamping Riveting cage, large clearance by phosphate treatment, injection oil, using temperatures up to 270 Celsius.
11. Pairs of bearings
Meet the technical requirements of the pairs of K bearing, the following special technical conditions and the paired bearing the:
K1-two deep groove ball bearings installed in pairs to withstand a one-way axial load.
K2-two deep groove ball bearings installed in pairs in order to afford a two-way axial load.
K3-two deep groove ball bearings under the no gap back to back installation (O-type installation).
K4-two deep groove ball bearings installed under the no clearance face (X-based installation).
K6-two sets of angular contact ball bearings installed in pairs to withstand a one-way axial load.
K7-two sets of angular contact ball bearings under the no gap back to back installation (O-type installation).
K8-two sets of angular contact ball bearings installed under the no clearance face (X-based installation).
K9-inner and outer ring with a compartment between two sets of tapered roller bearings installed in pairs to withstand a one-way axial load.
K10-inner and outer ring with a compartment between two sets of tapered roller bearings under the no gap back to back installation (O-type installation).
K11-outer ring with a compartment between two sets of tapered roller bearings installed under the no clearance face (X-based installation).
Universal matching bearings, can be arbitrary (in series, face to face, or back to back) pair installed, post code for the UA, UO and UL.
. UA-bearing face to face or back to back in the installation of a small axial clearance.
. UO-installed in the bearing face to face or back to back without clearance.
UL-installed in the bearing face to face or back to back mild when preloaded.
12. Lubrication
L. .- grease. Cases: L64 = Arcanol license Sonar saponified fat.
L9 ..- oil.
13. Packaging
KS-plate container packaging.
Japanese NSK Brand
1. Internal structure
A - interior design and standards of different bearings.
A - angular contact ball bearings, contact angles of 30 degrees.
A5 - angular contact ball bearings, contact angle of 25 degrees.
B - angular contact ball bearings, contact angle of 40 degrees.
C - angular contact ball bearings, contact angle of 15 degrees.
C - Tapered roller bearings, contact angle of 20 degrees.
D - tapered roller bearings, contact angle of 28 degrees.
C, CA (with brass, solid cage), CD (with stamping cage) - High load self-aligning roller bearings.
E - cylindrical roller bearings with high load.
H - high load thrust spherical roller bearings.
J - tapered roller bearing outer ring raceway of the small end diameter, angle, outer ring width and ISO provisions.
2. Materials
g - ring, rolling body for the case-hardened steel.
H - rings, ball stainless steel.
3. Retainer
M - copper alloy solid cage.
T - synthetic resin cage.
W - stamping cage.
V - no cage.
4. Seals, dust cover
Z, ZS - side with steel dust cover.
ZZ, ZZS - both sides with steel dust cover.
D, DU - side with a contact rubber seal.
DD, DDU - both sides with a contact rubber seal.
V - side with a non-contact rubber seals.
VV - both sides with a non-contact rubber seals.
5. Ferrule shape
K - Tapered bore, taper 1:12.
K30 - tapered bore, taper 1:30.
E - Ring have cut or hole.
E4 - the outer ring with a groove, hole.
N - outer diameter with a groove.
NR - outer diameter with a groove, snap ring.
6. Tie and pad
DB - back to back installed in pairs.
DF - installed in pairs face to face.
DT - series installed in pairs.
+ K - outer ring with a lining.
+ L - inner ring with a lining.
+ KL - inner and outer rings with a pad.
7. Clearance
C1 - Radial Bearing radial clearance, clearance smaller than C2.
C2 - Radial Bearing radial clearance, smaller than the standard clearance.
CN (omitted) - Radial Bearing radial clearance standards.
C3 - Radial Bearing radial clearance than the standard clearance big.
C4 - Radial Bearing radial clearance, clearance than C3 large.
C5 - Radial Bearing radial clearance, clearance than C4 large.
CC1 - cylindrical roller bearings (not interchangeable) radial clearance, smaller than the CC2 clearance.
CC2 - cylindrical roller bearings (not interchangeable) radial clearance, smaller than the standard clearance.
CC - cylindrical roller bearings (not interchangeable) standard radial clearance.
CC3 - cylindrical roller bearings (not interchangeable) radial clearance, clearance than the standard major.
CC4 - cylindrical roller bearings (not interchangeable) radial clearance, clearance than CC3 large.
CC5 - cylindrical roller bearings (not interchangeable) radial clearance, clearance than CC4 large.
MC1 - small, miniature ball bearing radial clearance, clearance smaller than MC2.
MC2 - small, miniature ball bearing radial clearance, clearance smaller than MC3.
MC3 - small, miniature ball bearing radial clearance standards for clearance.
MC4 - small, miniature ball bearing radial clearance, clearance than MC3 large.
MC5 - small, miniature ball bearing radial clearance, clearance than the MC4 large.
MC6 - small, miniature ball bearing radial clearance, clearance than the MC5 large.
CM - motor with deep groove ball bearings, cylindrical roller bearing radial clearance.
CT - Motor cylindrical roller bearings with radial clearance.
8. Tolerance Level
P0 (omitted) - tolerance class in accordance with JIS standards provided 0.
P6 - tolerance class in accordance with JIS standard requirements of the six.
P6X - tolerance class in accordance with JIS standard requirements of the 6X level.
P5 - tolerance class in accordance with JIS standards under 5.
P4 - tolerance class in accordance with JIS standard requirements of the four.
P2 - tolerance class in accordance with JIS standard requirements of the two.
9. Special specifications
X26 - restricted to the use temperature of 150 degrees Celsius.
X28 - temperature limit of 200 degrees Celsius.
X29 - restricted to the use temperature of 250 degrees Celsius.
S11 - aligning roller bearings, using the temperature limit of 200 degrees Celsius.
Germany's INA brand
Add code in the Post code is used to describe some of the special structure bearings, placed after the bearing code.
1. The size of the table used in the description of the supplementary code
These additional codes applicable to the current standard in the bearings, and bearing a part of code (see dimensions table), they can not be used for other bearings.
A, B, C, E-no clear meaning of these symbols, as needed, for that certain design features.
*- Split needle roller and cage assemblies
*- Bearing side seal ring
* P-bearing both sides with sealing ring
RS-bearing side with a ring
2RS-bearings on both sides with a ring
TN-plastic cages
V-sealed bearings
X-line with international standards requirements for the change of dimensions of the bearings and accessories, add code to use only during the transitional period. When the ball rolling with the general structure of faces, X is also represented as a cylindrical roller rolling surface and curve roller bearings.
Z-bearing side with a dust cover
2Z-bearings on both sides with a dust cover
ZW-needle roller and cage assembly, double row
2. With special tolerances and precision bearings supplementary code
The following code applies only to listed size table bearing some of the models.
P-expressed general dimensional tolerance and geometric precision of the bearing, do not need any additional code
P6-dimensional tolerance and high geometric precision bearings
P5-dimensional tolerance and high precision bearing geometry
P4-dimensional tolerance and high geometric precision bearings
C2-original radial clearance is less than C0
C0-normal radial clearance of the original (no need to add code)
C3-original radial clearance larger than C0
C4-original radial clearance larger than C3, the high dimensional accuracy and geometric accuracy and the original radial clearance is different from the normal clearance of the bearing, this added code can be used in combination.
H + ... + ... - inscribed circle diameter narrowing the scope of non-tolerance of the inner ring bearings, Needle roller bearings not included.
The quality level of G-needle.
SORT-in needle roller and cage assemblies in the needle's diameter categories, tolerance limit in microns.
GP-by noise test bearings.
2S, 3S, S-code is used to add two or more bearings, side by side installation, the load being evenly distributed, the number in front of that same series bearing the same size by matching the number. Classified by matching bearings or parts are not interchangeable.
3. With special structure bearing the complementary code
1. Special bearings and parts
BIR-spherical-shaped inner ring raceway
BR-bearing surface by the oxidation
AS .- outer ring with lubrication holes, add the figure for the number of lubrication hole
ASR .- There are lubrication holes in outer ring and groove
EGS-Inner Ring Road from turning out, no trace of spiral grinding
FPM-G by a series of fluorinated rubber sealing ring made of
Steel made by the GS-vertical bearing
IS .- There are lubrication holes in inner ring
ISR .- There are lubrication holes in the inner ring and the tank
PB-SG Series Vertical bearing connection holes drilled in the rough
SK-band curve of hexagonal rollers
RGS-aside allowances Inner Ring Road
2. With special grease lubrication of bearings
SM 01 - meet DIN51825 standards KP2K bearing grease, temperature range -30 ℃ ~ +120 ℃
SM 02 - meet DIN51825 standards K3N bearing grease, temperature range -30 ℃ ~ +140 ℃
SM 11 - meet DIN51825 standards KTC2E low temperature grease, temperature range -50 ℃ ~ +80 ℃
SM 27 - meet DIN51825 standards KH2R high temperature grease, temperature range -30 ℃ ~ +175 ℃
or am I imagining things?
