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SKF NJ 311 ECM General Purpose Cylindrical Roller Bearing - General Purpose Cylindrical Roller Bearings
SKFGeneral Purpose Cylindrical Roller Bearings

SKF NJ 311 ECM General Purpose Cylindrical Roller Bearing

The SKF Cylindrical Roller Bearing 311 is a general-purpose cylindrical roller bearing with an NJ design, featuring a 55 mm bore, 120 mm OD, and 29 mm overall width. It is constructed from alloy steel and has a brass…

SKU 3G-OTH-100847

Also listed as: NJ311ECM · NJ-311-ECM

Brand
SKF
Item
NJ 311 ECM General Purpose Cylindrical Roller Bearing
Part Number
NJ 311 ECM
Category
General Purpose Cylindrical Roller Bearings
Available to Order
Also known as:NJ 311 ECMSKF
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

SKF
Manufacturer Part Number
NJ 311 ECM
Type
Cylindrical, Brass
Bore
55 mm
OD
120 mm
Overall Wd
29 mm
Ring Material
Alloy Steel
System of Measurement
Metric
Bearing Industry Number
311
Cylindrical Bearing Design
NJ

Technical Documents

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SKF Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SKF Cylindrical Roller Bearing 311 is a general-purpose cylindrical roller bearing with an NJ design, featuring a 55 mm bore, 120 mm OD, and 29 mm overall width. It is constructed from alloy steel and has a brass cage, with the manufacturer part number NJ 311 ECM. This metric bearing is identified by the bearing industry number 311.

Frequently Asked Questions

What is the SKF NJ 311 ECM cylindrical roller bearing used for?

The SKF NJ 311 ECM is a general-purpose cylindrical roller bearing designed for high radial loads in industrial machinery such as gearboxes, pumps, compressors, and electric motors. Its NJ design accommodates axial displacement, making it suitable for applications where shaft expansion occurs.

What are the specifications of the SKF 311 cylindrical roller bearing?

The SKF 311 bearing has a 55 mm bore, 120 mm OD, and 29 mm overall width. It is a metric, alloy steel bearing with a brass cage and NJ design. The manufacturer part number is NJ 311 ECM, and the bearing industry number is 311.

Where to buy SKF NJ 311 ECM bearings worldwide?

3G Electric supplies the SKF NJ 311 ECM bearing to customers worldwide. We handle full logistics, customs clearance, and delivery, ensuring you receive genuine SKF components. Contact us for availability and lead time on this metric cylindrical roller bearing.

How to select the right SKF cylindrical roller bearing for an application?

To select the correct SKF cylindrical roller bearing, match the bore, OD, and width to your housing and shaft dimensions. Consider load type—NJ designs handle radial loads and axial displacement. Verify the cage material (e.g., brass for higher temperatures) and operating conditions like speed and lubrication.

Used in

Common applications for SKF
Electric motors — SKF 1200 and 1300 series self-aligning ball bearings with C3 clearance for thermal expansion and misalignment.
Gearboxes — SKF CRW1 single-lip oil seals with nitrile elements to retain lubricant and exclude contaminants.
Pumps — SKF self-aligning ball bearings with tapered 1:12 bores for mounting on adapter sleeves.
Conveyors — SKF self-aligning ball bearings with cylindrical bores to accommodate shaft deflection.
Fans and blowers — SKF high-clearance self-aligning ball bearings for high-speed operation and misalignment.
Material handling — SKF oil seals for smooth bores to protect bearings from dust and water ingress.
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SKF Products

3G Electric supplies SKF general purpose cylindrical roller bearings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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