RA Crossed Roller Bearings RA12008UU

The RA12008UU is a compact crossed roller bearing measuring 120mm in bore diameter and 136mm in outer diameter, with a slim 8mm width. Made from sturdy steel, it’s designed to handle combined loads with a basic load rating of 7.84 kN.

Its double-seal construction keeps contaminants out while retaining lubrication, making it low-maintenance. The bearing operates smoothly in temperatures from 0°C to 110°C, suitable for various industrial settings.

The press-fit shaft mount ensures a secure installation, and its ABEC5 rating (with options for higher precision) guarantees reliable performance. Ideal for applications like robotics or precision machinery where space and accuracy are key.

Weighing just 0.17kg, it’s lightweight yet durable. Compliant with RoHS and REACH standards, it’s a safe choice for environmentally conscious projects.

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Description

Features

Application

Q&A

Product Parameters

Part Number RA12008UU
Brand TFL
Size 120 mm x 136 mm x 8 mm
Bore Dia 120 mm
Outer Dia 136 mm
Width 8 mm
Greasing Hole(a) 2 mm
Greasing Hole(b) 0.8 mm
R(min) 0.5 mm
Shoulder Height Ds(max) 123.5 mm
Shoulder Height Dh(min) 130.5 mm
System of Measurement Metric
Bearing Type Roller
Roller Bearing Type Crossed
For Load Direction Combined
Construction Single Row
Seal Type Double Seal
Holes Without Holes
Ring Material Steel
Roller Material Steel
Basic Load Rating C 7.84 kN
Basic Load Rating Co 16.5 kN
Lubrication Required
Shaft Mount Type Press Fit
Temperature Range 0 -230 °F
ABEC Rating ABEC5(Available in ABEC7/9)
RoHS Compliant
REACH Compliant
Weight 0.17 Kg

Features

How Is RA12008UU Bearing Engineered for Reliability?

RA12008UU Bearing features a crossed roller design, providing stability under combined loads.
Its steel construction ensures durability, while the double seal protects against contaminants.

The bearing’s basic load rating of 7.84 kN allows it to handle demanding applications.
With a temperature range of 0-230°F, it performs reliably in various conditions.

RA12008UU Bearing’s press-fit shaft mount simplifies installation and enhances stability.
Its ABEC5 rating ensures precision, with options for higher grades if needed.

Application

Key Fields for RA12008UU Bearing
RA12008UU Bearing is commonly used in industrial automation, particularly in robotic arms and precision machinery, where its crossed roller design ensures stability under combined loads. The double seal helps keep contaminants out, extending its lifespan in demanding environments.

In medical imaging devices, RA12008UU Bearing provides smooth rotation for components like CT scanner gantries, thanks to its high precision and ABEC5 rating. The steel construction also ensures durability in frequent-use scenarios.

For 3D printers, RA12008UU Bearing’s compact width and press-fit design make it ideal for guiding linear motion systems. Its ability to handle both radial and axial loads improves print accuracy and reliability.

Automotive applications like steering systems benefit from RA12008UU Bearing’s robust load capacity and temperature resistance. The metric sizing ensures compatibility with a wide range of vehicle designs.