(dimensions in inches)

Bearing Type - single row assembly

Bore Dia (d) - 1.6880

Outer Dia (D) - 3.2700

Width (B) - 0.9375

Outer Width (Bo) - 0.7500

Inner Width (Bi) - 1.0000

Radius (min) (rs) - 0.138

Radius (min) (rs1) - 0.130

Weight (g) - 576.00

Material - 52100 chrome steel or equiavelent

The assembly part number lists the cone part number first and then the cup part number.

• Model Number: 25577/25521
• Inner Diameter：42,8752mm Outer Diameter：83,058mm Width：23,8125mm
• Type：Tapered Roller Bearings
• Update date：2025-12-16
• Application:orthodontic material,Special Equipment,wall industry,Energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving energy saving,hot and cold box,security equipment,Cleaning equipment,plastic molding,rolling mill roll neck and slowdown device,impression material,Industrial
• Similar models:Timken 25577/25522 Fersa 25577/25520 Timken 25577/25518 Timken 25577/25520 FBJ 25577/25520 NACHI 25577/25523 NACHI 25577/25520 KOYO 25577/25520 ISO 25577/25522 SKF 25577/2/25520/2/Q
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• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  2304-2RS	20	52	21	KOYO	Self-Aligning Ball Bearings
  23180-E1A-K-MB1	400	650	200	FAG	Spherical Roller Bearings
  25580/25520	44,45	82,931	23,812	Timken	Tapered Roller Bearings
  6015LLB	75	115	20	NTN	Deep Groove Ball Bearings
  6221	105	190	36	NTN	Deep Groove Ball Bearings
  7226CTRSU	130	230	40	NSK	Angular Contact Ball Bearings
  GE 180 AX	180	320	86	INA	Plain Bearings
  K155x163x26	155	163	26	CX	Needle Roller Bearings
  K40X47X18	40	47		INA	Needle Roller Bearings
  NP463799/NP235899	35	72	23	Timken	Tapered Roller Bearings
  PSL912-300	1180	1280	80	PSL	Thrust Roller Bearings
  SILJ50ES	50			SKF	Plain Bearings
  UCF 208-24G5PL	38,1			AST	Bearing Units
  5312W	60	130	54	FAF	DOUBLE ROW ANGULAR CONTACT BALL BEARINGS
  H312	60	80		FAG	ADAPTERS
  N12			.5410	Torrington	LOCKNUTS
  XLJ-51/4E	5.2500	7.2500	1.0000	RHP	DEEP GROOVE BALL BEARINGS
  6314.RS	70	150	35	SKF	DEEP GROOVE BALL BEARINGS
  RMS-27	3.3750	7.5000	1.5625	STEYR	DEEP GROOVE BALL BEARINGS
  6015-ZZ	75	115	20	CONSOLIDATED	DEEP GROOVE BALL BEARINGS