NAG4912 roller bearing single unmounted unit 60 mm ID, 85 mm OD, 25 mm width, full-complement double-row high carbon steel heavy-duty with oil holes, 3500 rpm max, -20 to 120°C, 0.94 lb

Single NAG4912 double-row roller bearing, 60×85×25 mm
✔️ Full complement, double-row, high carbon steel, oil holes, 3500 rpm

This single unmounted heavy-duty roller unit is a full-complement double-row bearing built for high radial loads in industrial gearboxes, conveyors, presses, and rotating shafts where compact load capacity matters.

✅ Model: NAG4912, NAG Metric Series
✅ Inside diameter: 60 mm
✅ Outside diameter: 85 mm
✅ Width: 25 mm
✅ Full complement, uncaged design, 2 rows
✅ Material: high carbon steel, open enclosure
✅ Oil holes included for lubrication access
✅ Dynamic load capacity 50,300 N; Static 84,300 N
✅ Max speed 3500 rpm; Temperature range -20 to 120°C
✅ Weight 0.94 lb; sold as a single unit

💡 What is a double-row roller bearing used for in heavy-duty machinery and how does a full-complement design help?
Double-row roller bearings are ideal when you need high radial load capacity in a compact footprint.

- Handles much higher radial loads than comparable single-row or sealed ball bearing options, making it handy for heavy shafts and rolls.
- Full-complement designs replace cages with extra rollers to maximize load capacity in low to moderate speed applications.
- Use in linear slide unit supports or rotating assemblies where heavy duty performance matters; oil holes make relubrication straightforward.