d - 71.438 mm

D - 130.175 mm

T - 41.275 mm

B - 41.275 mm

C - 31.750 mm

a - 11.2 mm

r1 min. - 3.5 mm

r2 min. - 3.3 mm

Weight - 2,55 Kg

Basic dynamic load rating (C) - 151000 kN

Basic static load rating (C0) - 229000 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: 644/633
• Inner Diameter：71.438mm Outer Diameter：130.175mm Width：41.275mm
• Type：Tapered Roller Bearings
• Update date：2025-12-12
• Application:marine test,mechanical annex,preservation equipment,horizontal processing,rolling mill roll neck and slowdown device,medical equipment,Switch,medical treatment,noise reduction equipment,E Beauty,filter paper products
• Similar models:ISO HM516442/10 NTN 4T-HM516449/HM516410 KOYO HM266447/HM266410 NSK 64433/64700 SKF 64450/64700 CX HM266446/10 Timken 942/932CD+X1S-64433 ISO HM266447/10 Timken 644/632D+X1S-645 NTN E-M240631T/M240644TD/M240647T/M240611D
• BEARING POWER International Trading Co.,Ltd. specialize in 644/633 products，there is large inventory of NACHI 644/633 . We has been built up long-term cooperation with NACHI company, could make a bulk order of the 644/633 Which NACHI 644/633 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
  1207-K	35	72	17	NKE	Self-Aligning Ball Bearings
  2205K-2RS+H305	25	52	18	CX	Self-Aligning Ball Bearings
  51410A	50	110	43	NTN	Thrust Ball Bearings
  581/572D+X1S-581	80,962	139,992	82,55	Timken	Tapered Roller Bearings
  7021 ADF	105	160	52	ISO	Angular Contact Ball Bearings
  K.81115LPB	75	100	7,5	Timken	Thrust Roller Bearings
  NN3176 K	380	650	194	ISO	Cylindrical Roller Bearings
  NU 420	100	250	58	ISB	Cylindrical Roller Bearings
  SBB 68	107,95	168,275	94,46	IKO	Plain Bearings
  SF4308	214,000	264,000	25,500	NTN	Angular Contact Ball Bearings
  SYFWK 20 LTHR	20	35	24	SKF	Bearing Units
  32222A	110	200	53	FAG	TAPERED ROLLER BEARINGS
  MI-12	.7500		1.0100	McGill	NEEDLE BEARINGS
  294/530	530	920		SKF	SPHERICAL ROLLER THRUST BEARINGS
  1304SA	20	52	15	FED	SELF
  KRE22PP	22		12	INA	NEEDLE ROLLERS
  NU2224E	120	215	58	STEYR	CYLINDRICAL ROLLER BEARINGS
  54211-U				STEYR	THRUST BALL BEARINGS WITH SPHERICAL SEATING RINGS
  4305	25	62	24	STEYR	DEEP GROOVE BALL BEARINGS
  23332MF80	160	340	136	CONSOLIDATED	SPHERICAL ROLLER BEARINGS