d - 49,987 mm

D - 92,075 mm

T - 24,608 mm

B - 25,4 mm

C - 19,845 mm

a - 19,9 mm

r min. - 2,4 mm

r2 min. - 0,8 mm

da min. - 60 mm

Da - 83 mm

db min - 56 mm

ra max. - 2,4 mm

rb max. - 0,8 mm

Db - 87 mm

Weight - 0,71 Kg

Basic dynamic load rating (C) - 84,8 kN

Basic static load rating (C0) - 119 kN

(Grease) Lubrication Speed - 4200 r/min

(Oil) Lubrication Speed - 5600 r/min

Calculation factor (e) - 0,38

Calculation factor (Y0) - 0,87

Calculation factor (Y1) - 1,59

• Model Number: 28579R/28521
• Inner Diameter：49,987mm Outer Diameter：92,075mm Width：24,608mm
• Type：Tapered Roller Bearings
• Update date：2025-12-16
• Application:hook,Laser Cutting,instrument,medical equipment,Control,multi-knife lathe,plant determination,glass processing machine,Storage Tool,education model Instruments,power tools
• Similar models:ISO 28579/28520 KOYO 28579R/28521 Timken 28579/28521 CX 28579/28521 FBJ 28579/28520 Timken 28579/28521B NTN 4T-28579/28521 Timken 28579/28520 CX 28579/28520 FBJ 28579/28521
• BEARING POWER International Trading Co.,Ltd. specialize in 28579R/28521 products，there is large inventory of KOYO 28579R/28521 . We has been built up long-term cooperation with KOYO company, could make a bulk order of the 28579R/28521 Which KOYO 28579R/28521 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
  1211	55	100	21	FBJ	Self-Aligning Ball Bearings
  15117/15245	30	62	19,05	NSK	Tapered Roller Bearings
  231/600 KCW33+H31/600	600	980	300	CX	Spherical Roller Bearings
  239/1000 CW33	1000	1320	236	CX	Spherical Roller Bearings
  23976CAKE4	380	520	106	NSK	Spherical Roller Bearings
  2P25002	1250,000	1750,000	390,000	NTN	Spherical Roller Bearings
  32038ED	190	290	64	NACHI	Tapered Roller Bearings
  53317	85	150	53,1	NKE	Thrust Ball Bearings
  7002DF	15	32	9	NACHI	Angular Contact Ball Bearings
  81593/81962	150,812	244,475	47,625	Timken	Tapered Roller Bearings
  95475/95925	120,65	234,95	63,5	FBJ	Tapered Roller Bearings
  GE 045 XES	45	75	43	CX	Plain Bearings
  NF3064	320	480	121	CX	Cylindrical Roller Bearings
  NN3064	320	480	121	CX	Cylindrical Roller Bearings
  NN3930MB	150	195	45	NSK	Cylindrical Roller Bearings
  NUP322	110	240	50	ISO	Cylindrical Roller Bearings
  SAZJ11	11,11			LS	Plain Bearings
  200420	1.2500	1.7500	1.2500	BAL	JOURNAL ROLLER ASSEMBLIES
  4548	1.6250	1.7500	1.7500	Hyatt	JOURNAL ROLLER BEARING OUTER RACES
  13BB	60	130	46	RIV	DEEP GROOVE BALL BEARINGS