| Symbol | Value | Description |
|---|---|---|
| ≈m | 0.193 kg | Weight |
| Cr | 38500 N | Basic dynamic load rating, radial |
| C0r | 76000 N | Basic static load rating, radial |

NTN
Machined needle roller bearing
Needle Roller Bearing
RFQ
Estimated delivery: 26 Jul 2026 (overseas stock, ~4 weeks)
EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.
NTN NK40/30R+1R35X40X30 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 |
|---|---|---|
| ≈m | 0.193 kg | Weight |
| Cr | 38500 N | Basic dynamic load rating, radial |
| C0r | 76000 N | Basic static load rating, radial |
| Symbol | Value | Description |
|---|---|---|
| d | 35 mm | Bore diameter |
| D | 50 mm | Outside diameter |
| B | 30 mm | Width |
| Code | Description |
|---|---|
| CN | Radial clearance group |
| Sheet steel cage | Cage |
| Tolerance class P0/PN2 / ABEC 1 | Tolerance class |
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:
NK4030R+1R35X40X30NK40 30R+1R35X40X30NK40NTNNK4030R1R35X40X30NTN NK40 30R 1R35X40X30NTNNK40 30R 1R35X40X30NTNNK4030R 1R35X40X30NTN NK4030R1R35X40X30NTN NK40 30R1R35X40X30NTNNK40NTNNK4030RNK4030RRFQ
Estimated delivery: 26 Jul 2026 (overseas stock, ~4 weeks)

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