d - 71,438 mm

D - 136,525 mm

T - 41,275 mm

B - 41,275 mm

C - 31,75 mm

ra1 max. - 3,3 mm

a - 29,9 mm

r min. - 3,5 mm

r1 min. - 3,3 mm

Da - 118 mm

db - 81 mm

ra max. - 3,5 mm

da - 87 mm

Db - 125 mm

Weight - 2,54 Kg

Basic dynamic load rating (C) - 195 kN

Basic static load rating (C0) - 263 kN

(Grease) Lubrication Speed - 2800 r/min

(Oil) Lubrication Speed - 3800 r/min

Calculation factor (e) - 0,36

Calculation factor (Y0) - 0,91

Calculation factor (Y1) - 1,7

• Model Number: 644/632
• Inner Diameter：71,438mm Outer Diameter：136,525mm Width：41,275mm
• Type：Tapered Roller Bearings
• Update date：2025-12-10
• Application:instrumentation instrument,drawing die,other rubber,floor industry,decoration machinery,forklift industry,climb ladder,Performance test,Industrial Adhesive,tapping machine,Broadcasting System
• Similar models:FBJ HM516448/HM516410 Timken 64452A/64713 KOYO HM516447/HM516410 NTN T-HM266446/HM266410D+A NTN E-HM266449D/HM266410/HM266410D NTN T-E-HM266449D/HM266410/HM266410DG2 NTN T-HM266447/HM266410G2 CX M276449/10 KOYO 64433R/64700 ISO 64452A/64700
• BEARING POWER International Trading Co.,Ltd. specialize in 644/632 products，there is large inventory of NSK 644/632 . We has been built up long-term cooperation with NSK company, could make a bulk order of the 644/632 Which NSK 644/632 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
  22332EK	160	340	114	NACHI	Cylindrical Roller Bearings
  31312	60	130	33,5	CYSD	Tapered Roller Bearings
  629	9	26	8	KOYO	Deep Groove Ball Bearings
  6381/6320-B	54,987	135,755	56,007	Timken	Tapered Roller Bearings
  7032 CTBP4	160	240	38	CX	Angular Contact Ball Bearings
  BCH06604-P	17,015	23,813	17,48	INA	Needle Roller Bearings
  BL 217 ZZ	85	150	28	NSK	Deep Groove Ball Bearings
  GEWZ34ES	34,925	55,563	52,375	LS	Plain Bearings
  GYA015RR	23,8125	52	28,2	Timken	Deep Groove Ball Bearings
  KUX090 2RD	228,6	247,65	12.7	KOYO	Angular Contact Ball Bearings
  NJ12/630	630	1150	230	ISO	Cylindrical Roller Bearings
  NU2315-E-TVP3	75	160	55	NKE	Cylindrical Roller Bearings
  QJ234	170	310	52	CYSD	Angular Contact Ball Bearings
  SS7205 ACD/HCP4A	25	52	15	SKF	Angular Contact Ball Bearings
  TAM 1015	10	17	15	IKO	Needle Roller Bearings
  NA2210.2RSR	50	90	23	FAG	NEEDLE BEARINGS
  QJ1032N2MA	160	240	38	SKF	ANGULAR CONTACT BALL BEARINGS WITH SPLIT INNER RACE
  E-5214-B/E-5214-UMR	70	125	1.5625	Rollway	CYLINDRICAL ROLLER BEARINGS
  ER-216	5.5118	80	1.6875	CONSOLIDATED	BALL BEARING
  GE-200AX	200	340	74	CONSOLIDATED	SPHERICAL PLAIN BEARINGS