d - 40 mm

D - 90 mm

B - 23 mm

d₂ - - 60 mm

D₁ - - 79.8 mm

b - 5.5 mm

K - 3 mm

r_1,2 - min. - 1.5 mm

d_a - min. - 47.2 mm

d_a - max. - 60 mm

D_a - max. - 81 mm

r_a - max. - 1.5 mm

Basic dynamic load rating - C - 107 kN

Basic static load rating - C₀ - 108 kN

Fatigue load limit - P_u - 12 kN

Reference speed - 7000 r/min

Limiting speed - 9500 r/min

Calculation factor - e - 0.24

Calculation factor - Y₁ - 2.8

Calculation factor - Y₂ - 4.2

Calculation factor - Y₀ - 2.8

Weight - 0.74 kg

• Model Number: 21308 EK
• Inner Diameter：90mm Outer Diameter：40mm Width：23mm
• Type：Spherical Roller Bearings
• Update date：2025-12-11
• Application:other mold,shaft milling machine,food / grain / food equipment,Gas turbine,Ball screw,Beauty and Body,Surveying Surveying Instruments,cleaning agent,vacuum suction cup,Machine tools,Spectrum Products
• Similar models:KOYO 21308RHK NSK 21308L11ACAM CX 21308KCW33 AST 21308MBW33 FAG 21308-E1-K+H308 FAG 21308-E1-K NSK 21308EAE4 NTN 21308C AST 21308MBK ISB 21308K+AH308
• BEARING POWER International Trading Co.,Ltd. specialize in 21308EK products，there is large inventory of SKF 21308 EK . We has been built up long-term cooperation with SKF company, could make a bulk order of the 21308 EK Which SKF 21308EK 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
  231/750 KCW33+H31/750	750	1220	365	CX	Spherical Roller Bearings
  30FSH55	30	55	20	Timken	Plain Bearings
  B37	69,85	113,51	28,58	INA	Thrust Ball Bearings
  6306-Z	72	30	19	SKF	Deep Groove Ball Bearings
  71912 C-UX	60	85	26	CX	Angular Contact Ball Bearings
  AST40 SP1.0				AST	Plain Bearings
  CX040				CX	Wheel Bearings
  GEC320FBAS	320	440	160	SKF	Plain Bearings
  NA 4926	130	180	50	IKO	Needle Roller Bearings
  NJ 315	75	160	37	NSK	Cylindrical Roller Bearings
  NU413	65	160	37	FBJ	Cylindrical Roller Bearings
  SC3209	160,000	229,500	33,000	NTN	Deep Groove Ball Bearings
  SR168-2TS	6,35	9,525	3,175	ZEN	Deep Groove Ball Bearings
  T7FC090	90	175	48	NKE	Tapered Roller Bearings
  7318WNSU	90	190	43	FAF	ANGULAR CONTACT BALL BEARINGS
  3310DA.MA	50	110	44.4	FAG	DOUBLE ROW ANGULAR CONTACT BALL BEARINGS WITH SPLIT INNER RACE
  Q0L28	140	210	33	New Departure	ANGULAR CONTACT BALL BEARINGS
  85SD23	85	180	60	Torrington (Old No.)	SPHERICAL ROLLER BEARINGS
  LJ-13/4	1.7500	3.7500	.8125	RHP	DEEP GROOVE BALL BEARINGS
  140x170x15mm	140	170	15	CONSOLIDATED	OIL SEALS