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SKF Cylindrical Roller Bearing: 311, 55 mm Bore, 120 mm OD, 29 mm Overall Wd - General Purpose Cylindrical Roller Bearings
SKFGeneral Purpose Cylindrical Roller Bearings

SKF Cylindrical Roller Bearing: 311, 55 mm Bore, 120 mm OD, 29 mm Overall Wd

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
Cylindrical Roller Bearing: 311, 55 mm Bore, 120 mm OD, 29 mm Overall Wd
Category
General Purpose Cylindrical Roller Bearings
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

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
Heavy machinery gearboxes — SKF spherical roller bearings (e.g., 24056 CCK30/W33) for high radial load capacity
Electric motor repair — SKF cylindrical roller bearings (e.g., NJ 307 ECP/C3) for free axial expansion
Pump shaft sealing — SKF CRWA1 rotary shaft seals (e.g., 17100) for fluid retention in rotating equipment
Conveyor system maintenance — SKF wear sleeves (e.g., 99274) to protect shafts from seal abrasion
Machine tool spindles — SKF angular contact bearings (e.g., 7413 BGBM) for axial load support in duplex sets
Industrial fan assemblies — SKF spherical roller bearings (e.g., 23044 CC/W33) for misalignment accommodation

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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Cross-referenced by specification & description
SKF Cylindrical Roller Bearing: 311, 55 mm Bore, 120 mm OD, 29 mm Overall Wd, Cylindrical, Steel (MPN NJ 311 ECJ)
SKF
SKF Cylindrical Roller Bearing: 311, 55 mm Bore, 120 mm OD, 29 mm Overall Wd, Cylindrical, Steel (MPN NJ 311 ECJ)
SKF Cylindrical Roller Bearing: 311, 55 mm Bore, 120 mm OD, 29 mm Overall Wd, Cylindrical (MPN NJ 311 ECP)
SKF
SKF Cylindrical Roller Bearing: 311, 55 mm Bore, 120 mm OD, 29 mm Overall Wd, Cylindrical (MPN NJ 311 ECP)
SKF Cylindrical Roller Bearing: 312, 60 mm Bore, 130 mm OD, 31 mm Overall Wd, Cylindrical, Brass (MPN NJ 312 ECM)
SKF
SKF Cylindrical Roller Bearing: 312, 60 mm Bore, 130 mm OD, 31 mm Overall Wd, Cylindrical, Brass (MPN NJ 312 ECM)
SKF Cylindrical Roller Bearing: 311, 55 mm Bore, 120 mm OD, 29 mm Overall Wd, Cylindrical, Brass (MPN NU 311 ECM)
SKF
SKF Cylindrical Roller Bearing: 311, 55 mm Bore, 120 mm OD, 29 mm Overall Wd, Cylindrical, Brass (MPN NU 311 ECM)
SKF Cylindrical Roller Bearing: 313, 65 mm Bore, 140 mm OD, 33 mm Overall Wd, Cylindrical, Brass (MPN NJ 313 ECM)
SKF
SKF Cylindrical Roller Bearing: 313, 65 mm Bore, 140 mm OD, 33 mm Overall Wd, Cylindrical, Brass (MPN NJ 313 ECM)
SKF Cylindrical Roller Bearing: 311, 55 mm Bore, 120 mm OD, 29 mm Overall Wd, Cylindrical, Steel, 3 (MPN NJ 311 ECJ/C3)
SKF
SKF Cylindrical Roller Bearing: 311, 55 mm Bore, 120 mm OD, 29 mm Overall Wd, Cylindrical, Steel, 3 (MPN NJ 311 ECJ/C3)

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