d - 42,862 mm

D - 82,931 mm

T - 23,812 mm

B - 25,4 mm

C - 19,05 mm

ra1 max. - 0,8 mm

a - 17,6 mm

r min. - 2,3 mm

r1 min. - 0,8 mm

Da - 74 mm

db - 49,5 mm

ra max. - 2,3 mm

da - 53 mm

Db - 77 mm

Weight - 0,586 Kg

Basic dynamic load rating (C) - 76,5 kN

Basic static load rating (C0) - 99 kN

(Grease) Lubrication Speed - 4500 r/min

(Oil) Lubrication Speed - 6000 r/min

Calculation factor (e) - 0,33

Calculation factor (Y0) - 0,99

Calculation factor (Y1) - 1,8

• Model Number: 25578/25520
• Inner Diameter：42,862mm Outer Diameter：82,931mm Width：23,812mm
• Type：Tapered Roller Bearings
• Update date：2025-12-09
• Application:boring bar boring bar,air shower etc,Industrial,Automation,noise inspection,equipment,light therapy instrument,medical equipment,chamfer,sample cup,small diesel generators
• Similar models:Fersa 25578/25523 Timken 25578/25523 FBJ 25578/25520 NSK 25578/25520 NTN 4T-25578/25520 CX 25578/25520 Fersa 25578/25520 ISO 25578/25520 Timken 25578/25520 KOYO 25578/25523
• BEARING POWER International Trading Co.,Ltd. specialize in 25578/25520 products，there is large inventory of NSK 25578/25520 . We has been built up long-term cooperation with NSK company, could make a bulk order of the 25578/25520 Which NSK 25578/25520 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
  4T-9378/9321	76,2	171,45	49,212	NTN	Tapered Roller Bearings
  4T-HM89446/HM89410	34,925	76,2	29,37	NTN	Tapered Roller Bearings
  6009Z	45	75	16	KOYO	Deep Groove Ball Bearings
  6210/HR11TN	50	90	20	SKF	Deep Groove Ball Bearings
  6317ZX	85	180	41	KOYO	Deep Groove Ball Bearings
  6908-2RS C3	40	62	12	PFI	Deep Groove Ball Bearings
  AXK 100135	100	135	4	NBS	Needle Roller Bearings
  KBHL 10-PP	10	19		NBS	Linear Bearings
  NBL.30.1155.201-2PPN	1007	1298	90	ISB	Thrust Ball Bearings
  NNU 4928 K/SPW33	140	190	50	ISB	Cylindrical Roller Bearings
  NU319-E-TVP2	95	200	45	FAG	Cylindrical Roller Bearings
  RV152109-4	15	21	9	KOYO	Needle Roller Bearings
  UKP205+H2305	20		36,5	NACHI	Bearing Units
  140336	.8750	1.2500	2.2500	BAL	JOURNAL ROLLER ASSEMBLIES
  7004BE2RS	20	42	12	INA	ANGULAR CONTACT BALL BEARINGS
  SSR-8	.5000	1.1250	.2500	New Departure	DEEP GROOVE BALL BEARINGS
  NNCL4856V.C3	280	350	69	SKF	CYLINDRICAL ROLLER BEARINGS
  33011	55	90	27	SNR	TAPERED ROLLER BEARINGS
  7009CDHCP4A	45	75	16	SKF	ANGULAR CONTACT BALL BEARINGS
  NJ-1084	420	620	90	CONSOLIDATED	CYLINDRICAL ROLLER BEARINGS