SKF Bearing 6311 NR

d=55.0mm, D=120.0mm, B=29.0mm, Mass bearing=1.41kg
Material: Bearing steels
In Stock:
Photo may not represent actual item. See the technical specification for details.

Specifications of SKF Bearing 6311 NR

SKF Bearing 6311 NR

Dimensions

d 55.0mm Bore diameter
D 120.0mm Outside diameter
B 29.0mm Width
d1 75.34mm Shoulder diameter
D2 103.7mm Recess diameter
D3 115.21mm Diameter of snap ring groove
D4 129.7mm Outside diameter of snap ring
b 3.1mm Width of snap ring groove
C 4.06mm Distance outer ring from side face to snap ring groove
f 2.82mm Width of snap ring
r0 0.6mm Bottom radius of snap ring groove
r1,2 2.0mm Chamfer dimension
SKF Bearing 6311 NR

Abutment dimensions

da 66.0mm Diameter of shaft abutment
Da 109.0mm Diameter of housing abutment
Db 131.0mm Diameter of snap ring recess in the housing
ba 3.5mm Width of snap ring recess in the housing
Ca 6.88mm Distance from outer ring side face to snap ring back face
ra 2.0mm Radius of shaft or housing fillet

Calculation data

Basic dynamic load rating C 74.1kN
Basic static load rating C0 45.0kN
Fatigue load limit Pu 1.9kN
Reference speed 12000.0r/min
Limiting speed 8000.0r/min
Minimum load factor kr 0.03
Calculation factor f0 13.0

Mass

Mass bearing 1.41kg

Included products

Snap ring SP 120

Tolerance class

Dimensional tolerances P6
Radial run-out Normal

Product description of SKF Bearing 6311 NR

SKF Bearing 6311 NR, Category: SKF Bearing > Rolling bearings > Ball bearings > Deep groove ball bearings. and we have related type you may also like SKF Bearing 6311-2RS1.

Deep groove ball bearings are the most widely used bearing type and are particularly versatile. They have low friction and are optimized for low noise and low vibration which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than other bearing types.

SKF Bearing 6311 NR, the SKF bearing catalogue lists a large range of designs, variants and sizes of deep groove ball bearings. Beyond our catalogue offering, the SKF Explorer deep groove ball bearings are customizable to offer advantages for applications with specific performance needs.

Single row deep groove ball bearings are the most widely used bearing type. They are available capped (with seals or shields) or open. Open bearings that are also available capped may have recesses in the ring side faces.

SKF Bearing 6311 NR, SKF inch bearings in the EE(B), RLS and RMS series are intended as aftermarket items and, therefore, SKF recommends not using these bearings for new bearing arrangement designs.

For bearing selection and technical details refer to the product table.
SKF can also supply bearings with a tapered bore. For detailed information.
Stainless steel deep groove ball bearings are corrosion resistant when exposed to moisture and several other media. They are available capped (with seals or shields) or open. Open bearings that are also available capped may have recesses in the ring side faces.
These bearings have a lower load carrying capacity than same-sized bearings made of high chromium steel.
For bearing selection and technical details refer to the product table and set the filter "Design" to "Single row, stainless steel".
Single row deep groove ball bearings with filling slots have a filling slot in both the inner and outer rings to accommodate more balls than standard deep groove ball bearings. Filling slot bearings have a higher radial load carrying capacity than bearings without filling slots, but their axial load carrying capacity is limited. They are also unable to operate at the same high speeds as bearings without filling slots.
Deep groove ball bearings with filling slots are available open or with shields on one or both sides. They are also available with or without a snap ring groove. Open bearings that are also available with shields may have recesses in the outer ring.
Large size deep groove ball bearings with filling slots, without cage, are available on request.
For bearing selection and technical details refer to the product table and set the filter "Design" to "Single row with filling slots".
Double row deep groove ball bearings are very suitable for bearing arrangements where the load carrying capacity of a single row bearing is inadequate. For the same bore and outside diameter, double row bearings are slightly wider than single row bearings in the 62 and 63 series, but have a considerably higher load carrying capacity.
Double row deep groove ball bearings are only available as open bearings (without seals or shields).
For bearing selection and technical details refer to the product table and set the filter "Design" to "Double row".
SKF double row deep groove ball bearings are fitted with two snap-type, ball centred glass fibre reinforced PA66 cages
When used at high temperatures, some lubricants can have a detrimental effect on polyamide cages. For additional information about the suitability of cages, refer to Cages.

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