d - 55 mm

D - 120 mm

B - 29 mm

d₁ - - 75.34 mm

D₂ - - 103.7 mm

r_1,2 - min. - 2 mm

d_a - min. - 66 mm

D_a - max. - 109 mm

r_a - max. - 2 mm

Basic dynamic load rating - C - 74.1 kN

Basic static load rating - C₀ - 45 kN

Fatigue load limit - P_u - 1.9 kN

Reference speed - 12000 r/min

Limiting speed - 8000 r/min

Calculation factor - k_r - 0.03

Calculation factor - f₀ - 13.1

Mass bearing - 1.373 kg

• Model Number: 6311
• Inner Diameter：120mm Outer Diameter：55mm Width：29mm
• Type：Deep Groove Ball Bearings
• Update date：2025-12-11
• Application:Switch,Pneumatic Control Elements,Anesthetic Equipment,shaft milling machine,equipment,industry test,Forging machine,small appliances,chuck industry,water,car steering pin
• Similar models:SKF 6311 KOYO 6311NR SKF 6311M FBJ 6311-2RS NTN 6311ZNR NSK 6311 NKE 6311 SKF 6311-ZNR ZEN 6311-2RS NKE 6311-2Z-N
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  NJ 312	60	130	31	NSK	Cylindrical Roller Bearings
  RNAO18X30X24	18	30	24	KOYO	Needle Roller Bearings
  TUP1 300.100	300	305		CX	Plain Bearings
  TVK1733JL	17	33	3,4	KOYO	Needle Roller Bearings
  L-6307	35	80	31	FAF	SELF
  95RIN430	9.5000	12.7500	1.6250	Torrington	CYLINDRICAL ROLLER BEARINGS
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  Z99R-4	.2500	.6250	.1960	New Departure	DEEP GROOVE BALL BEARINGS
  695ZZ	5	13	4	NTN	DEEP GROOVE BALL BEARINGS