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Secret - FAG bearing type English suffix
Source: China Bearing Network Time: 2014-06-06
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The basic composition of the bearing code
The basic composition of the rolling bearing code of the rolling bearing: the rolling bearing code prefix, the rolling bearing code suffix front code pre-code R directly placed before the bearing code; other code with a small dot and the root code separated. GS. Thrust cylindrical roller bearing race. Example: GS. 81112 . K. An assembly of a roll cage and a cage. For example: an assembly K of a thrust cylindrical roller and a cage. 81108 R Bearing without separable inner or outer ring. Example: RNU207 NU207 bearing without inner ring. WS thrust cylindrical roller bearing shaft ring. Example: WS. 81112.
The post code is placed after the root code. When there are multiple sets of post code; it should be placed from left to right in the order of the post code listed in the bearing code table. Some post codes are preceded by small dots. The fundamental code is separated.
1. Post code internal layout
A, B, C, D, E internal layout change examples: angular touch ball bearings 7205C, 7205E, 7205B; C 15 ° touch angle, E-25 ° touch angle; B 40 ° touch angle. Example: cylindrical roller, tone Heart roller and thrust spherical roller bearings N309E, 21309 E, 29412E enhanced drawing; bearing load can be improved.
VH roller self-locking full-roller cylindrical roller bearing (the diameter of the complex circle of the roller is not the same as that of the same type of bearing). Example: NJ2312VH .
2. Post-code bearing dimensions and external layout
DA separable double row angular contact ball bearing with double inner ring. Example: 3306DA . DZ cylindrical outer diameter roller bearing. Example: ST017DZ .
K tapered bore bearing; taper 1: 12 . Example: 2308K. K30- tapered bore bearing; taper 1: 30. Example: 24040 K30.
Double row cylindrical roller bearings with dust cover on both sides of 2LS double inner ring. Example: NNF5026VC. 2LS. V internal layout changes; double inner ring; two sides with dust cover, full roller double row cylindrical roller bearings.
Bearings with snap grooves on the N outer ring. Example: 6207N . Bearings with snap groove and snap ring on the outer ring of NR. Example: 6207 NR.N2- Four-point touch with two snap grooves on the outer ring Ball bearing. Example: QJ315N2 .
S Outer ring bearing with smooth oil groove and three smooth oil holes. Example: 23040 S. Spherical roller bearings with bearing outer diameter D ≥ 320mm are not marked S.
The X form factor conforms to the rules of international regulations. Example: 32036X Z•• Skill conditions for special layout. Sliding down from Z11. Example: Z15 stainless steel bearing (W-N01.3541).
ZZ roller bearing with two retaining rings guiding the outer ring.
3. Rear code sealing and dustproof
The RSR bearing has a seal on one side. Example: 6207 RSR. 2RSR bearing with sealing ring on both sides. Example: 6207. 2RSR.
The ZR bearing has a dust cover on one side. Example: 6207 ZR. 2ZR bearing with dust cover on both sides. Example: 6207. 2ZR ZRN bearing has a dust cover on one side; the other side has a stop groove on the outer ring. Example: 6207 ZRN .
. 2ZRN bearing with dust cover on both sides; with snap groove on the outer ring. Example: 6207. 2ZRN .
4. Post code holder and its information
1 Solid cage. A or B is placed after the cage code; A indicates that the cage is guided by the outer ring; B indicates that the cage is guided by the inner ring.F steel solid cage; roll guide. FA steel solid cage; outer ring guide. FAS steel solid cage; outer ring guide; with smooth groove. FB steel solid cage; inner ring guide. FBS steel Solid cage; inner ring guide; with smooth groove. FH steel solid cage; carburized and quenched. H; H1 carburized and quenched cage. FP steel solid window cage. FPA steel solid window retaining Shelf; outer ring guide. FPB steel solid window cage; inner ring guide. FV; FV1 steel solid window hole cage; aging, quenching and tempering disposal.
L light metal solid cage; roll body guide. LA light metal solid cage; outer ring guide. LAS light metal solid cage; outer ring guide; with smooth groove. LB light metal solid cage; inner ring guide. LBS light metal solid cage; inner ring guide; Slot. LP light metal solid window cage. LPA light metal solid window cage; outer ring guide. LPB light metal solid window cage; inner ring guide (thrust roller bearing for shaft guidance).
M ; M1 brass solid cage. MA brass solid cage; outer ring guide. MAS brass solid cage; outer ring guide; with smooth groove. MB brass solid cage; inner ring guide (thrust centering roll The sub-bearing is guided by the collar.) MBS brass solid cage; inner ring guide; with smooth groove. MP brass solid straight pocket holder. MPA brass solid straight pocket also cage; outer ring guide. MPB brass Solid straight pocket holder; inner ring guide.
T phenolic laminate tube solid cage; tumbler guide. TA phenolic laminate tube solid cage; outer ring guide. TB phenolic laminate tube solid cage; inner ring guide. THB phenolic laminate tube pocket Type cage; inner ring guide. TP phenolic layer gravel tube straight pocket holder. TPA phenolic laminated tube straight pocket holder; outer ring guide. TPB phenolic laminated tube straight pocket holder; inner ring Guide. TN engineering plastic mold holder; roll guide; additional numbers indicate different materials. TNH engineering plastic self-locking pocket holder. TV glass fiber reinforced polyamide solid cage; steel ball guide. TVH glass Fiber reinforced polyamide self-locking pocket type solid cage; steel ball guide. TVP glass fiber reinforced polyamide window type solid cage; steel ball guide. TVP2 glass fiber reinforced polyamide solid cage; roller guide. TVPB fiberglass Reinforced polyamide solid cage; inner ring guide (thrust roller bearing for shaft guidance). TVPB1 glass fiber reinforced polyamide solid window cage; shaft guide (thrust roller bearing).
Stamping cage J steel stamping cage. JN deep groove ball bearing riveting cage. The cage change is added after the cage code; perhaps the number inserted in the center of the cage code; indicates that the cage layout changes. These figures are only used Transition period; Example: NU 1008M 1 .
5. Rear code no cage bearing
V Full complement roll bearing. Example: NU 207V . VT Full complement roll bearing with blocking ball or roller. Example: 51120VT .
6. Post coded public service level (scale accuracy and rotation accuracy)
P0 public service level meets the 0 level of the international standard ISO rules; the code is omitted; does not indicate.
The P6 public service grade conforms to the 6th grade of the international standard ISO rules. The P6X public service grade conforms to the international standard ISO rules of the 6-stage tapered roller bearing. The P5 public service grade conforms to the international standard ISO rule of 5. The P4 public service grade conforms to the international standard. Level 4 of the ISO Rules. The P2 public service level conforms to Level 2 of the International Code ISO Rules (excluding tapered roller bearings). The SP scale accuracy is equivalent to 5 steps; the rotation accuracy is equivalent to 4 stages (double row cylindrical roller bearings). UP scale accuracy is equivalent to 4 grades; rotation accuracy is higher than grade 4 (double row cylindrical roller bearings). HG scale accuracy is equivalent to 4 grades; rotation accuracy is higher than 4 grades; lower than grade 2 (spindle bearings).
7. Post code gap
C1 clearance fits the normal rule of the group; less than 2 groups. C2 clearance fits the norm of the rule group; less than 0 group. C0 clearance fits the norm of the rule group 0; the code is omitted; does not indicate. C3 clearance fit 3 groups of canonical rules; greater than 0 groups. 4 groups of C4 clearance rules; greater than 3 groups. 5 groups of C5 clearance rules; greater than 4 groups.
The public service level code and the clearance code need to be indicated together; the combination of the public service level code (not indicated by P0 level) plus the upstream gap group number (not indicated by the 0 group) indicates. Example: P63=P6+C3; Class P6; radial clearance 3 groups. P52=P5+C2; indicates bearing common service class P5; radial clearance 2 groups. Non-standard clearance; special radial clearance and axial clearance required In this case; the relevant limit values ​​shall be indicated by the number of μ m after the letter R (radial clearance) or A (axial clearance); the numbers shall be separated by small dots. Example: 6210. R10. 20 6210 bearing; radial clearance 10 μ m to 20 μ m . 6212. A120.160 6212 bearing; axial clearance 120 μ m to 160 μ m.
8. Post code test noise bearing
F3 low noise bearing. Mainly refers to cylindrical roller bearings and deep groove ball bearings with inner diameter d > 60mm. For example: 6213. F3 . G Low noise bearing. Mainly refers to deep groove ball bearings with inner diameter d ≤ 60mm. Example: 6207. G post code.
The heat treatment S0 bearing ring is disposed by high temperature tempering; the working temperature can reach 150 °C. The S1 bearing ring is treated by high temperature tempering; the working temperature can reach 200 °C. The S2 bearing ring is treated by high temperature tempering; the working temperature can reach 250 °C. S3 bearing rings are treated by high temperature tempering; working temperature can reach 300 °C. S4 bearing rings are treated by high temperature tempering; working temperature can reach 350 °C.
9. Post code special skill condition
Successive numbering production skill conditions. Example: F80 bearing inner and outer diameter public service and radial clearance tightening. K consecutive numbered viewing skill conditions. Example K5 bearing inner and outer diameter public service tightening. ZB cylindrical roller with a diameter greater than 80mm. Example: NU 364. The convexity of the two ends of the ZB.ZB2 needle is greater than the usual skill requirements. For example: K18 × 26 × 20F. ZB2.ZW double row needle roller and cage assembly. Example: K20 × 25 × 40FZW .
. 700 with 700,000 initial consecutive numbered skill conditions. Z52JN. 790144 Bearings can be used for high temperature and low speed; special heat treatment; steel plate stamping riveting cage; large clearance; phosphating treatment; grease; operating temperature can exceed 270 °C.
Rear coded special skill condition KDA Split inner ring , split inner ring K Tapered bore tapered hole 1:12 K30 Tapered bore tapered hole 1:30 N circular in the outer ring for snap ring S Lubricating groove and bores in the Outer ring
The “S†suffix is ​​now completely revoked in the new E1 series! The outer ring oil groove and oil hole are now standard equipment. W03B Stainless steel bearing N2 two retaining troves for fixing the outer ring
Paired bearings and machine tool spindle bearings
1 Paired bearings that meet the K skill conditions; the following special skill conditions are related to the paired bearings: K1 Two sets of deep groove ball bearings are paired to accept one-way axial loads. K2 Two sets of deep groove ball bearings are paired to accept Two-way axial load. K3 Two sets of deep groove ball shafts according to the back-back device without backlash (O-type device). K4 Two sets of deep groove ball bearings are equipped with no-gap face-to-face device (X-type device). K6 Two sets of angular touch ball bearings Paired devices to accept one-way axial loads. K7 Two sets of angular contact ball bearings are used without backlash (O-type device). K8 Two sets of angular touch ball bearings are used in a face-free device (X-type device) K9 Two sets of tapered roller bearings with spacers between the outer rings are paired to accept one-way axial loads. K10 Two sets of tapered roller bearings with spacers between the inner and outer rings are back-to-back devices without backlash (O type 1. Two sets of tapered roller bearings with spacers between the outer rings of K11 are equipped with no-gap face-to-face devices (X-type devices).2 Bearings in pairs or groups; demand packaged for delivery; perhaps indicated as belonging to a pair. Bearings of different groups are not exchanged. When the device belongs to the same group of bearings; the device should be marked according to the mark and the positioning line If each pair of bearings is equipped with a certain amount of axial or radial clearance; its clearance shall be indicated after the K skill condition as indicated in Article 1 (2) of (7). For example; 31314A. K11. A100.140 shows two sets of 31314A single row tapered roller bearings; face-to-face device; between the outer ring with a certain spacer; the axial clearance of the bearing device is between 100 μ m and 140 μ m; Universal mating bearings can be arbitrarily (series; face-to-face or back-to-back) pairing devices; rear coders are UA, UO and UL. The UA has a small axial clearance when the bearings face to face or back to back. UO has no play when the bearing is face to face or back to back. UL has a slight pre-interference when the bearing is face to face or back to back. For example; B 7004C. TPA. P4. K5. UL indicates an angular contact ball bearing with a touch angle of 15o for the spindle; a solid cage for the phenolic laminated tube straight pocket; outer ring guide; bearing public service class 4; inner diameter and outer diameter public service contraction ㄓ眯 å³ å³ å²¢ å²¢ å²¢ å²¢ å²¢ å²¢ å²¢ å²¢ 诒 诒 诒 诒 诒 诒 诒 诒 诒
10. Rear code machine tool spindle bearing
KTPA. HG clip cloth exchange pocket solid cage; outer ring guide; accuracy grade HG. TPA. HG. K5. UL clip cloth exchange pocket solid cage; outer ring guide; accuracy grade HG; bearing outer diameter and inner diameter public service contraction. å•¥ 沧 沧 dark ã„Œè¤°å³ ã„Œè¤°å³ å²¢ å²¢ å²¢ 诿娑 诿娑 诿娑 诿娑 沧 沧 沧 沧Star 岫 throw 韫. TPA. P2. K5. UL clip cloth exchange pocket solid cage; outer ring guide; accuracy grade HG; bearing outer diameter and inner diameter public service contraction. å•¥ 沧 沧 dark ã„Œè¤°å³ ã„Œè¤°å³ å²¢ å²¢ å²¢ 诿娑 诿娑 诿娑 诿娑 沧 沧 沧 沧Star 岫 throw 韫. TPA. P2 UL clip cloth exchange pocket solid cage; outer ring guide; accuracy grade HG; bearing outer diameter and inner diameter public service contraction. å•¥ 沧 沧 dark ã„Œè¤°å³ å²¢ å²¢ å²¢ å²¢ 诿娑 诿娑 诿娑 诿娑Dam star 岫 throw 韫. Rear code machine tool spindle bearing TPA. P2. K5. UL clip cloth crossbody solid cage; outer ring guide; accuracy grade HG; universal layout of paired devices; bearing has a slight over-interference in face-to-face or back-to-back devices. C coulact angle / touch angle 15C . D coulact angle / Touch angle 25C . P4S toerance class P4S .
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