1. model：NNU4940 2. type：double row cylindrical roller bearing 3. size：200×280×80 mm 4. bore：cylindrical bore / tapered bore 1:12 (K) 5. precision grade：P4 P5 P6 6. feature：ribs on outer ring 7. optional：W33 oil groove, full complement rollers 8. cage：brass cage / no cage 9. feature：compact cross section, high radial load density 10. application：heavy duty spindle, lathe, grinding machine
NNU4940 is a double-row cylindrical roller bearing designed for high radial loads and excellent rigidity. Its compact cross-section makes it suitable for machine tool spindles, industrial machinery, and heavy-duty gearboxes. Main dimensions: 200 × 280 × 80 mm (d × D × B).
Different operating conditions may require different precision grades and radial clearances. We can help distributors confirm the correct model, clearance, and bore type according to equipment requirements. Related models such as NNU4938 and NNU4944 can also be considered for range expansion.
Flexible Supply and Packaging
Choose industrial bulk packing, neutral packaging, or individual boxes to suit your sales channel. OEM and private-label options are available for distributors developing their own bearing brands. Packaging can be arranged for export transportation.
Export Service and Repeat Orders
We support bulk inquiries, mixed-model orders, and repeat purchasing plans. Shipping options include sea, air, and express delivery, depending on order size and destination. Payment and trade terms can be discussed according to your requirements.
CHIK BEARING produces a wide range of ball and roller bearings for automotive making,Ferrous Metallurgy, hemical Machinery and Machine Manufacturing .
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