Double row cylindrical roller bearings

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Double Row or Two Row cylindrical roller bearings are designed for heavy loads that can’t be serviced with a single row bearing. The additional row of rollers allows for the increased radial loads. These bearings are typically metric dimensioned with a machined brass cage. The cage is a one-piece roller riding brass finger cage that promotes smooth rolling. They are industry interchangeable with same size designation. They will be supplied with C3 Internal Radial Clearance unless specified. Bearings with tapered bore, “K” suffix, and P5 clearance can be supplied upon request. Applications include lathes, gearboxes, and pinion stands.

Two-row, or double-row, cylindrical bearings are designed for additional strength in carrying radial loads. These bearing types are interchangeable so the dimensions and diameter under the rollers (NNU style) and diameter over the rollers (NN style) are held to an ISO/DIN standard. Interchangeability is designed for the ring without the rollers to allow interchange with competitor inner rings.

Bearing Number Bore Dia Outer DIa Width Size
NNU4868K Double row cylindrical roller bearings For Heavy Load SH33M J7 95
NNU49/950K Double row cylindrical roller bearings 178 mm M10x1 36 mm 92.1 mm
NNU4964K Double row cylindrical roller bearings 38.1 mm 179 mm 49.2 mm SCOU208-24
NNU4928K Double row cylindrical roller bearings Yes (with retaining [Aluminum Alloy] Alu Height Configurable L-Shaped
NNU49/1180 Double row cylindrical roller bearings 36.4 mm 9.5 mm 11.2 kN 80
NN48/750 Double row cylindrical roller bearings Radial Ball Punching 14
NNU4944K Double row cylindrical roller bearings 9 Days Square flange shape Steel Cast iron cover with
NN3040K Double row cylindrical roller bearings Deep Groove Ball Bea [Steel] Steel 6 Available
NN3021 Double row cylindrical roller bearings Available Bearings with Housin [Aluminum Alloy] 201 Yes (with retaining
NNU4996 Double row cylindrical roller bearings 8 Days 1045 Carbon Steel 6 Black Oxide Coating
NNU40/600K Double row cylindrical roller bearings 304 Stainless Steel Round shape 0.75 No Surface Treatment
NNU4072K Double row cylindrical roller bearings 15.4 Cast iron made Square flange shape Insert Bearing Unit
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