d - 12,7 mm

D - 34,988 mm

T - 10,998 mm

B - 10,988 mm

C - 8,73 mm

a - 8,3 mm

r min. - 1,2 mm

r2 min. - 1,2 mm

da min. - 18,5 mm

Da - 29 mm

db min - 17 mm

ra max. - 1,2 mm

rb max. - 1,2 mm

Db - 32 mm

Weight - 0,055 Kg

Basic dynamic load rating (C) - 12,6 kN

Basic static load rating (C0) - 11,9 kN

(Grease) Lubrication Speed - 12000 r/min

(Oil) Lubrication Speed - 17000 r/min

Calculation factor (e) - 0,45

Calculation factor (Y0) - 0,73

Calculation factor (Y1) - 1,33

• Model Number: A4050/A4138
• Inner Diameter：12,7mm Outer Diameter：34,988mm Width：10,998mm
• Type：Tapered Roller Bearings
• Update date：2025-12-16
• Application:Hair styling device,Body shaping,,physical instruments,bio-chemical,plastic molding,sleep monitoring,wall industry,ventilation equipment,lifting chain,Hydraulic Press
• Similar models:FBJ A4050/A4138 Timken A4050/A4138B SNR EC44050S01 NTN 4T-A4050/A4138 KOYO A4050/A4138 NSK A4050/A4138 Timken A4050/A4138
• BEARING POWER International Trading Co.,Ltd. specialize in A4050/A4138 products，there is large inventory of KOYO A4050/A4138 . We has been built up long-term cooperation with KOYO company, could make a bulk order of the A4050/A4138 Which KOYO A4050/A4138 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
  1203-TVH	17	40	12	FAG	Self-Aligning Ball Bearings
  23028W33	140	210	53	ISO	Spherical Roller Bearings
  23948E	240	320	60	NACHI	Cylindrical Roller Bearings
  32228 A	140	250	71,75	CX	Tapered Roller Bearings
  575/572D+X2S-575	76,2	139,992	82,55	Timken	Tapered Roller Bearings
  6200LU	10,000	30,000	9,000	NTN	Deep Groove Ball Bearings
  722078510	38	90	23	INA	Cylindrical Roller Bearings
  BAH0012AD	37	72,04	37	SKF	Angular Contact Ball Bearings
  GB43302S01	45	84	45	SNR	Angular Contact Ball Bearings
  K58x63x17	58	63	17	ISO	Needle Roller Bearings
  NN3012K	60	86,1	26	NTN	Cylindrical Roller Bearings
  NNCF4968-V	340	427,1	118	NKE	Cylindrical Roller Bearings
  NU 2210	50	90	23	ISB	Cylindrical Roller Bearings
  UC214	70	125	74,6	CRAFT	Deep Groove Ball Bearings
  ALS-18	2.2500	4.5000	.8750	SKF	ANGULAR CONTACT BALL BEARINGS
  160SD41	160	270	109	Torrington (Old No.)	SPHERICAL ROLLER BEARINGS
  L90N	90	150	18	NH	DEEP GROOVE BALL BEARINGS
  LJT12	12	32	10	R&M	ANGULAR CONTACT BALL BEARINGS
  6012.2RS1	60	95	18	SKF	DEEP GROOVE BALL BEARINGS
  SS61702-ZZ	15	21	4	CONSOLIDATED	DEEP GROOVE BALL BEARINGS