d - 28,575 mm

D - 69,85 mm

T - 23,812 mm

B - 25,357 mm

C - 19,05 mm

ra1 max. - 1,3 mm

a - 9,1 mm

Da - 61 mm

db - 35 mm

ra max. - 2,3 mm

da - 39 mm

Db - 64 mm

Weight - 0,483 Kg

Basic dynamic load rating (C) - 69 kN

Basic static load rating (C0) - 81,5 kN

(Grease) Lubrication Speed - 5 700 r/min

(Oil) Lubrication Speed - 7 600 r/min

Calculation factor (e) - 0,27

Calculation factor (Y0) - 1,21

Calculation factor (Y2) - 2,19

• Model Number:4T-2578/2523
• Inner Diameter：28,575mm Outer Diameter：69,85mm Width：23,812mm
• Type：Tapered Roller Bearings
• Update date：2025-12-12
• Application:intermediate,food packaging,stamping die,Die,plastic rolling,agricultural testing and analysis equipment and related,atomizer class,Industry,hydraulic pump,mechanical annex,Gear grinding machine
• Similar models:ISO 2578/2523 Timken 2578/2523-S KOYO 2578/2520 CX 2578/2523 FBJ 2578/2523 Timken 2578/2523-B NTN 4T-2578/2523 Timken 2578/2524YD Timken 2578/2523
• BEARING POWER International Trading Co.,Ltd. specialize in 4T-2578/2523 products，there is large inventory of NTN 4T-2578/2523 . We has been built up long-term cooperation with NTN company, could make a bulk order of the 4T-2578/2523 Which NTN 4T-2578/2523 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
  22319-E-K-W33	95	200	67	NKE	Spherical Roller Bearings
  53176/53377	44,45	95,25	30,958	FBJ	Tapered Roller Bearings
  6010	50	80	16	Fersa	Deep Groove Ball Bearings
  6317-RS	85	180	41	CYSD	Deep Groove Ball Bearings
  7221C	105	190	36	NTN	Angular Contact Ball Bearings
  7238 B-UD	190	340	110	CX	Angular Contact Ball Bearings
  ASTT90 1525	15	17		AST	Plain Bearings
  NAG 4904	20	37	17	IKO	Cylindrical Roller Bearings
  NC6200	10	30	9	KOYO	Deep Groove Ball Bearings
  NNCL4848 V	240	300	60	ISO	Cylindrical Roller Bearings
  NU2328-E-MA6	140	300	102	NKE	Cylindrical Roller Bearings
  SM1106KB	34,925	72	37,7	Timken	Deep Groove Ball Bearings
  UC318	90	190	96	CRAFT	Deep Groove Ball Bearings
  UCF212	60			CRAFT	Bearing Units
  LS251/2-AC	7.5000	12.5000	1.7500	FAG	ANGULAR CONTACT BALL BEARINGS
  MB-2	15	21	4	FAG	LOCKWASHERS
  HMV110E			83	SKF	HYDRAULIC NUTS
  SJ7344			1.0000	RBC	NEEDLE BEARINGS
  NCF-2988V	440	600	95	CONSOLIDATED	CYLINDRICAL ROLLER BEARINGS
  QJ-12/710	710	1280	250	CONSOLIDATED	ANGULAR CONTACT BALL BEARINGS WITH SPLIT INNER RACE