d - 55 mm

D - 120 mm

T - 31,5 mm

a - 25 mm

B - 29 mm

C - 25 mm

C_{a min} - 4 mm

C_{b min} - 6,5 mm

D_{a max} - 110 mm

D_{a min} - 104 mm

D_{b min} - 111 mm

d₁ - 84,7 mm

d_{a max} - 71 mm

d_{b min} - 65 mm

r_{1, 2 min} - 2,5 mm

r_{3, 4 min} - 2 mm

r_{a max} - 2,5 mm

r_{b max} - 2 mm

m - 1,8 kg / Weight

C_r - 151000 N

C_0r - 173000 N / Static load rating (radial)

e - 0,35

Y - 1,74

Y₀ - 0,96

C_ur - 20600 N / Fatigue limit load, radial

n_G - 6200 1/min / Limiting speed

n_B - 4500 1/min / Reference speed

Main dimensions to DIN ISO 355 / DIN 720, separable, adjusted or in pairs

• Model Number: 30311-A
• Inner Diameter：55mm Outer Diameter：120mm Width：31,5mm
• Type：Tapered Roller Bearings
• Update date：2025-12-11
• Application:Optical Instruments,Textile Accessories,electronic components,wheel lathe,floor industry,tower crane,Ball screw,Food testing,ultra-quiet generators,boring bar boring bar,Pneumatic Control Valves
• Similar models:CX 30311A FAG 30311-A NTN 4T-30311DDF NSK HR30311J NKE 30311 NTN 4T-30311 ISB 30311 Timken 30311 FBJ 30311 KOYO 30311JR
• BEARING POWER International Trading Co.,Ltd. specialize in 30311-A products，there is large inventory of FAG 30311-A . We has been built up long-term cooperation with FAG company, could make a bulk order of the 30311-A Which FAG 30311-A 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.

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  CLB14UU	14	21		Samick	Linear Bearings
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  HK3016.2RS	30	37	16	Timken	Needle Roller Bearings
  NA210-31	49,2125	90	49,2	KOYO	Deep Groove Ball Bearings
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  NU2924	120	180	27	ISO	Cylindrical Roller Bearings
  SEA30 /NS 7CE3	30	42	7	SNFA	Angular Contact Ball Bearings
  ZSL192319	95	200	67	NBS	Cylindrical Roller Bearings
  H2311.114	55	75		FAG	ADAPTERS
  CSXD040	4.0000	5.0000	.5000	INA	FOUR POINT ANGULAR CONTACT BALL BEARINGS
  NU256E	280	500	80	SKF	CYLINDRICAL ROLLER BEARINGS
  6221-Z	105	190	36	CONSOLIDATED	DEEP GROOVE BALL BEARINGS