INA
Needle Bearings
Needle Roller Bearing
From US$24.87
Excl. VAT| Spec | Price | Quantity |
|---|---|---|
| ina:NA4912-XL | US$24.87 |
EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.
INA NA4912-XL Needle Roller Bearing is a compact bearing designed to carry high radial load within a small cross-section. It is suitable for gearboxes, automotive transmissions, industrial links, and pivot positions where space saving and load capacity are both required.
Long, small-diameter rollers are arranged in a cage or full-complement design. Versions with or without inner rings are available, and shaft hardness and surface finish are critical when the shaft is used as the raceway.
Check mounting envelope, inner ring requirement, shaft surface hardness, lubrication, load, and speed range.
| Symbol | Value | Description |
|---|---|---|
| d | 60 mm | Bore diameter |
| D | 85 mm | Outside diameter |
| B | 25 mm | Width |
| Cr | 68.000 N | Basic dynamic load rating, radial |
| C0r | 108.000 N | Basic static load rating, radial |
| Cur | 19.100 N | Fatigue load limit, radial |
| nG | 6.700 1/min | Limiting speed |
| nϑr | 3.700 1/min | Reference speed |
| ≈m | 0,425 kg | Weight |
| Symbol | Value | Description |
|---|---|---|
| F | 68 mm | Raceway diameter inner ring |
| rmin | 1 mm | Minimum chamfer dimension |
| s | 1,5 mm | Axial displacement |
| Item | Code | Description |
|---|---|---|
| Cage | Standard | |
| Coating | Without |
| Symbol | Value | Description |
|---|---|---|
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 120 °C | Operating temperature max. |
The same part number can be written with or without separators, or in progressive prefix form. We index these common variants so your search reaches this page:
NA4912XLNA4912 XLNA4912INANA4912XLINA NA4912 XLINANA4912 XLINA NA4912XLINANA4912From US$24.87
Excl. VAT| Spec | Price | Quantity |
|---|---|---|
| ina:NA4912-XL | US$24.87 |
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