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

311-Z

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.	75.2	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-Z
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：2026-07-24
Application:Polymer,coal,wall industry,Beauty and Body,electronic materials,manual Tools,medical equipment,supporting facilities,joint protection,coal mill,rolling mill roll neck and slowdown device
Similar models:NU 311 ECM BA1B 311585 W 6007-2RS1/VP311 22311 EK BD-C 2211 KV-AHX 311 7311 BECBJ 30311 FSAF 22311 T PPMF 202311.5 51311
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Model No. Inner Diameter Outer Diameter Width Type

20 VS R
412502
511/500 F
71914 CD/HCP4AH1
WS 81168

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Hot number： 6242 7204 BECBY FSAF 1518 x 3.1/8 TLC FSAF 22517 FYRP 3 7/16 GEP 480 FS HJ 1080 NK 50/25 TN NN 3092 K/SPW33 NNCF 4914 CV P 35 TR PCM 161825 M SAF 22510 x 1.3/4 T SNL 3196 G SNW 16x2.3/4

Model No.	Inner Diameter	Outer Diameter	Width	Type
20 VS R
412502
511/500 F
71914 CD/HCP4AH1
WS 81168