Bushings

Name: PCM 121412 M SKF
Brand: SKF
SKU: 10040138
Price: 30.25 CZK
Availability: InStock

Sliding bearings are a key component in many machines and devices, enabling smooth movement between friction surfaces. Their main advantage is the reduction of friction and wear, which increases the efficiency and service life of the equipment. Sliding bearings are resistant to shocks and vibrations, ensuring stable and reliable operation of mechanisms. Thanks to their simple design and low maintenance costs, they are a popular choice in many industries. Modern materials and technologies are constantly improving the performance of sliding bearings.

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What plain bearings do we offer

A plain bearing has no rolling elements: the shaft slides within the housing. We carry over 60 SKF plain bearings for shafts ranging from 6 to 120 mm, made of PTFE and POM composites, bronze, and wound fibers. Choose based on material, lubrication, and dimensions.

When to Use a Plain Bearing

According to SKF, composite plain bearings are primarily designed for heavy loads under slow rotation or oscillating motion. They are suitable for applications where space is limited, where there is a risk of insufficient lubrication, or where lubrication is not possible.

Sliding Bearing Materials

Material	Lubrication	Operating Temperature	Available
PTFE composite	does not require	−200 to +250 °C	20+
POM composite	only during assembly	−40 to +110 °C (briefly 130 °C)	10+
Liner Bushings	–	–	10+
Made of wound fibers	–	–	4
Made of solid bronze	–	–	3
Made from a coiled bronze strip	–	–	3

According to SKF, POM bushings tolerate misalignment and contaminants better, while PTFE bushings run completely without lubrication.

How to Read Bearing Housing Designations

For SKF composite housings, the designation indicates the dimensions: PCM 081008 M has an inner diameter of 8 mm, an outer diameter of 10 mm, and a width of 8 mm. The letter at the end indicates the material: E and B stand for PTFE, and M stands for POM.

Need help? We’re available on weekdays from 7:00 a.m. to 3:00 p.m. at +420 732 445 248 or podpora@wafarex.com. You can find rolling bearings in the Bearings category.

Frequently Asked Questions

What is the difference between a rolling bearing and a plain bearing?

A rolling bearing has balls or rollers, while in a plain bearing, the shaft slides along a lubricated surface. Plain bearings are primarily designed for heavy loads during slow or oscillating motion.

When is a plain bearing the right choice?

For slow rotation or oscillation under heavy loads, when space is limited, or when the bearing cannot be lubricated.

PTFE or POM?

PTFE requires no lubrication and withstands temperatures from −200 to +250 °C. POM is lubricated only during installation, withstands temperatures from −40 to +110 °C, and handles misalignment and contaminants better.