d - 53.975 mm

D - 123.825 mm

T - 38.100 mm

B - 36.678 mm

C - 30.162 mm

a - 9.2 mm

r1 min. - 3.5 mm

r2 min. - 3.3 mm

Weight - 2,25 Kg

Basic dynamic load rating (C) - 149000 kN

Basic static load rating (C0) - 197000 kN

(Grease) Lubrication Speed - 3000 r/min

(Oil) Lubrication Speed - 4100 r/min

Calculation factor (e) - 0.35

Calculation factor (Y0) - 0.95

Calculation factor (Y1) - 1.73

• Model Number: 557S/552A
• Inner Diameter：53.975mm Outer Diameter：123.825mm Width：38.100mm
• Type：Tapered Roller Bearings
• Update date：2025-12-12
• Application:Grinding and polishing equipment,rehabilitation training equipment,Small air generators,plastic molding,X-ray Equipment,sheet industry,Hairbrush device,Material handling equipment,wall materials,stirrer,magnetic elements
• Similar models:KOYO 557A/553X KOYO 557S/552A KOYO 6557R/6535 FBJ 25577/25520 FBJ 25572/25520 Timken 25577/25518 AST 25570/25519 PFI 15578/20 Timken 5577/5535 Timken 25572/25526
• BEARING POWER International Trading Co.,Ltd. specialize in 557S/552A products，there is large inventory of NACHI 557S/552A . We has been built up long-term cooperation with NACHI company, could make a bulk order of the 557S/552A Which NACHI 557S/552A 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
  16100ZZ	10	28	8	FBJ	Deep Groove Ball Bearings
  32208	40	80	24,75	ISB	Tapered Roller Bearings
  4205-2RS	25	52	18	CX	Deep Groove Ball Bearings
  63215 ZZ	75	130	41,3	ISO	Deep Groove Ball Bearings
  7005DF	25	47	12	NTN	Angular Contact Ball Bearings
  71918 CD/HCP4AL	125	90	18	SKF	Angular Contact Ball Bearings
  7305CDT	25	62	17	CYSD	Angular Contact Ball Bearings
  7315C	75	160	37	KOYO	Angular Contact Ball Bearings
  HM813840/HM813810	55,562	127	36,512	FBJ	Tapered Roller Bearings
  NU2307	35,000	80,000	31,000	NTN	Cylindrical Roller Bearings
  NUP3080	400	600	148	CX	Cylindrical Roller Bearings
  RNAO80X100X30	80	100	30	INA	Needle Roller Bearings
  S7018 ACB/P4A	140	90	24	SKF	Angular Contact Ball Bearings
  SL185009	45	75	40	INA	CYLINDRICAL ROLLER BEARINGS
  3917	145	85		SKF	THRUST BALL BEARINGS
  7334BMG	170	360	72	CONSOLIDATED	ANGULAR CONTACT BALL BEARINGS
  KC-60XPO	6.0000	6.7500	.3750	CONSOLIDATED	FOUR POINT ANGULAR CONTACT BALL BEARINGS
  61920-2RS	100	140	20	CONSOLIDATED	DEEP GROOVE BALL BEARINGS
  KB-75ARO	7.5000	8.1250	.3125	CONSOLIDATED	ANGULAR CONTACT BALL BEARINGS
  SCE-1112			.7500	CONSOLIDATED	NEEDLE BEARINGS