INA NK7025 Machined Needle Roller Bearings

Machined Needle Roller Bearings

Needle Roller Bearing

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EX-WORKS (Incoterms 2020) Seoul, Korea — Buyer arranges freight, duties, and insurance.

Category: Needle Roller Bearing
Bore: 70 mm mm
Outer Ø: 85 mm mm

Overview

INA NK7025 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.

Key features

High radial load capacity in limited radial space
Supports compact and lightweight designs
Available with or without inner ring
Suitable for heavily loaded gears and links

Typical applications

Automotive transmissions
Industrial gearboxes
Compressors and pumps
Links, pivots, and rocker arms

Selection guidance

Check mounting envelope, inner ring requirement, shaft surface hardness, lubrication, load, and speed range.

Symbol	Value	Description
≈m	0.27 kg	Weight
Cr	50.000 N	Basic dynamic load rating, radial
C_0r	92.000 N	Basic static load rating, radial
C_ur	16.000 N	Fatigue load limit, radial
n_G	6.600 1/min	Limiting speed
n_ϑr	4.450 1/min	Reference speed

Symbol	Value	Description
d	70 mm	Bore diameter
D	85 mm	Outside diameter
r_{1, 2 min}	0,6 mm	Minimum chamfer dimension

Symbol	Value	Description
T_min	-30 °C	Operating temperature min.
T_max	120 °C	Operating temperature max.

Code	Description
Without	Lubricant
Standard	Cage
PN	Tolerance class

datasheet pdf download

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