d - 60 mm

D - 130 mm

B - 31 mm

C - 31 mm

r min. - 2,1 mm

da min. - 72 mm

Da max. - 118 mm

ra max. - 2 mm

Weight - 2,07 Kg

Basic dynamic load rating (C) - 167 kN

Basic static load rating (C0) - 191 kN

(Grease) Lubrication Speed - 3 400 r/min

(Oil) Lubrication Speed - 4 400 r/min

Calculation factor (e) - 0,25

Calculation factor (Y0) - 2,63

Calculation factor (Y1) - 2,69

Calculation factor (Y2) - 4

• Model Number:21312K
• Inner Diameter：60mm Outer Diameter：130mm Width：31mm
• Type：Spherical Roller Bearings
• Update date：2026-01-02
• Application:ultra-quiet generators,chuck industry,electromagnetic clutch,electrocardiograph,Cylinder Type,Blood coagulation reagent,Infrared Technology,Performance test,journal lathe,CNC,pipe fittings Steel industry
• Similar models:ISB 21312 CX 21312CW33 ISB 21312K+AHX312 NTN 21312K FAG 21312-E1 NSK 21312EAE4 ISB 21312K ISO 21312KCW33+AH312 CX 21312KCW33+AH312 Timken 21312VCSJ
• BEARING POWER International Trading Co.,Ltd. specialize in 21312K products，there is large inventory of NTN 21312K . We has been built up long-term cooperation with NTN company, could make a bulk order of the 21312K Which NTN 21312K is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express.Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  617/7	7	11	2,5	ISO	Deep Groove Ball Bearings
  61936M	180	250	33	SIGMA	Deep Groove Ball Bearings
  6318LLB	90	190	43	NTN	Deep Groove Ball Bearings
  7412 B-UX	60	150	70	CX	Angular Contact Ball Bearings
  HAR012	60	95	18	KOYO	Angular Contact Ball Bearings
  KBX025	63,5	79,375	7,938	KOYO	Angular Contact Ball Bearings
  M1881	28.575	34.925	12.700	KOYO	Needle Roller Bearings
  MRJ7	177,8	342,9	63,5	RHP	Cylindrical Roller Bearings
  NJ236-E-MA6+HJ236-E	180	320	52	NKE	Cylindrical Roller Bearings
  NK85/25	85	105	25	SKF	Needle Roller Bearings
  NU 222 ECJ	200	110	38	SKF	Thrust Ball Bearings
  VKBA5414	60	168	105,5	SKF	Tapered Roller Bearings
  7228WNMBRSU	140	250	42	FAF	ANGULAR CONTACT BALL BEARINGS
  NJ1038	190	290	46	SKF	CYLINDRICAL ROLLER BEARINGS
  SL183056	280	420	106	INA	CYLINDRICAL ROLLER BEARINGS
  RNU4900	22		13	FAG (Old No.)	NEEDLE BEARINGS
  NJ310E	50	110	27	STEYR	CYLINDRICAL ROLLER BEARINGS
  108	8	22	7	SKF	SELF
  XLS-161/2	16.5000	22.0000	2.7500	CONSOLIDATED	DEEP GROOVE BALL BEARINGS
  N-410	50	130	31	CONSOLIDATED	CYLINDRICAL ROLLER BEARINGS