Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF 311

311

Dimensions

d		55	mm
D		120	mm
B		29	mm
d₁	≈	75.34	mm
D₂	≈	103.7	mm
r_1,2	min.	2	mm

Abutment dimensions

d_a	min.	66	mm
D_a	max.	109	mm
r_a	max.	2	mm

Calculation data

Basic dynamic load rating	C	79.2	kN
Basic static load rating	C₀	67	kN
Fatigue load limit	P_u	2.85	kN
Reference speed		10000	r/min
Limiting speed		6300	r/min
Calculation factor	k_r	0.05

Mass

Mass bearing

1.5

Model Number: 311
Inner Diameter：55mm Outer Diameter：120mm Width：29mm
Reference speed:6300 r/min Limiting speed:10000 r/min
Type：Bearings, units and housings Ball bearings Deep groove ball bearings Deep groove ball bearings
Details： Deep groove ball bearings
Update date：2026-07-23
Application:injection molding machine,Vertical pull,switch,coal mill,security,Cylinder Micro,preservation equipment,air purification,Garment Accessories,multi-knife lathe,auto tools
Similar models:311-2Z 331159 A 331175 A BT4B 331161 AG/HA4 33115 6311-2Z W 6206-2RS1/VP311 HM 231132/110 7311 BEGBY 33114/DF
BEARING POWER International Trading Co.,Ltd. specialize in 311 products，there is large inventory of SKF 311 Deep groove ball bearings. We has been built up long-term cooperation with SKF company, could make a bulk order of the 311 Which SKF 311 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 Type

7013 CD/HCP4AH1
GEZM 014 ES
NJ 308 ECP
NUP 232 ECML
SAF 1611 x 2

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Hot number： 16009/HR22Q2 2200558 31324 X 6007/HR22T2 71911 ACE/P4A 7315 BECBJ 99839 BT4B 331089 CG/HA1 GRA 3007 HM 30/950 NJ 2203 ECP OKC 630 SAW 23228 SY 25 TR W 628/6-2RS1

Model No.	Inner Diameter	Outer Diameter	Width	Type
7013 CD/HCP4AH1
GEZM 014 ES
NJ 308 ECP
NUP 232 ECML
SAF 1611 x 2