Super precision single row angular contact ball bearings d25-30mm SKF Type 7 

Type

Single row angular contact ball bearings

Bearing structure

Full cover rings

Rolling element

Ball

Number of rolling row

1

Bearing design

Super-precison bearings

For shaft type

Round

Cover type

Open

Bore diameter

25mm, 30mm

Outside diameter

37mm, 42mm, 47mm, 52mm

Bearing thickness

7mm, 9mm, 12mm, 15mm

Contact angle

25°, 15°

Reference speed

34000rpm, 40000rpm, 38000rpm, 45000rpm, 44000rpm, 52000rpm, 49000rpm, 58000rpm, 32000rpm, 36000rpm, 42000rpm, 50000rpm, 46000rpm, 56000rpm, 43000rpm, 26000rpm, 30000rpm, 28000rpm

Limiting speed

53000rpm, 63000rpm, 56000rpm, 70000rpm, 68000prm, 83000prm, 75000rpm, 90000rpm, 48000rpm, 85000rpm, 50000rpm, 60000rpm, 67000rpm, 40000rpm, 45000rpm

Basic dynamic load

3.9kN, 4.16kN, 4.94kN, 5.27kN, 6.37kN, 6.76kN, 7.93kN, 8.32kN, 9.23kN, 9.56kN, 13kN, 13.5kN, 4.42kN

Basic static load

3.05kN, 3.2kN, 2.7kN, 2.85kN, 3.8kN, 4kN, 3.9kN, 4.15kN, 5kN, 5.2kN, 6.95kN, 7.2kN, 3.55kN, 3.75kN

Fatigue load limit

129N, 137N, 114N, 120N, 160N, 170N, 166N, 173N, 212N, 220N, 290N, 305N, 150N

Load direction

Combined radial and axial

Cage method

Glass fiber reinforced PEEK cage, Resin cage, Outer ring centred

Cage material

PEEK, Phenolic resin

Roller element material

Carbon chronium steel, Silicon nitride (Si3N4)

Internal clearance/ preload/ Tolerance class

ISO class 4, ISO class 4A

Lubrication

Non-lube

Operation ambient

Vibration

Features

Very high running accuracy, Very high load carrying capacity, Relatively high speed and stiffness

Overall diameter

37mm, 42mm, 47mm, 52mm

Overall length

7mm, 9mm, 12mm, 15mm

Approx. weight

0.021kg, 0.019kg, 0.04kg, 0.036kg, 0.042kg, 0.039kg, 0.074kg, 0.065kg, 0.079kg, 0.07kg, 0.13kg, 0.11kg, 0.026kg, 0.024kg