b.dry Stainless Steel Chains

for Lubricant-free Operation

Where re-lubrication is undesirable or difficult, b.dry chains demonstrate their particular strengths. Designed for lubricant-free operation, they are especially suitable for applications with demanding hygiene and cleanliness requirements. In defined iwis wear tests, b.dry chains achieved up to twice the wear life of the tested comparison chain in dry operation and up to four times the wear life with initial lubrication. Actual service life depends on the specific application and operating conditions.

b.dry chains are based on corrosion-resistant CF stainless steel and feature an optimized articulated link designed for low-maintenance, lubricant-free operation.

A key element of the b.dry design is the use of specially developed high-performance polymer bushings, which prevent direct steel-on-steel sliding contact between the pin and bushing.

The combination of corrosion-resistant stainless steel, high-performance polymer bushings and the optimized articulated link provides high wear resistance, corrosion resistance and mechanical strength.

Depending on the application and operating conditions, this design can contribute to extended service life while enabling operation without additional re-lubrication.

Intelligent Chain Bushing

b.dry chains are designed for lubricant-free operation. Specially developed high-performance polymer sliding bearings in the articulated link enable operation without additional re-lubrication under the specified operating conditions.
The high-performance polymer used for the bushings complies with the applicable FDA requirements for the specified food-contact applications.
Their material properties make the bushings suitable for applications with defined hygiene and cleanliness requirements, including specified applications in the food industry.

Find out more about the cf b.dry single parts

Technical Highlights

Precisely matched component properties help reduce chain wear and contribute to extended service life. b.dry chains are designed for reliable operation under high dynamic loads and offer high corrosion resistance.
Stainless steel bushings: thin-walled, seamless and ball-drifted. This design contributes to high mechanical strength and wear resistance.
The CF base chain is made from austenitic stainless steel, providing high corrosion resistance for demanding operating environments.
High resistance to a range of aggressive media, depending on the substance, concentration, temperature and exposure conditions. Please contact iwis to verify chemical compatibility for your specific application.
Temperature range: –100 °C to +200 °C, subject to the specified application and operating conditions.
PWIS-free

Also available as roller chains with attachments or extended pins, as well as custom-developed chain solutions. ANSI chains are also available on request.

Application Areas

Environments involving water, moisture or steam
Applications involving aggressive media, subject to chemical compatibility and the specific operating conditions
Applications with strict hygiene and cleaning requirements, such as:
- Pharmaceutical industry
- Paint lines in the automotive industry
- Food industry
- Cleanroom applications

Wear Behavior of the b.dry Roller Chain with and without initial Lubrication

In defined iwis wear tests, initial lubrication with a food-grade lubricant increased the wear life of the b.dry roller chain by up to four times compared with dry operation. The results shown below are based on the specified test conditions; actual wear behavior and service life may vary depending on the application and operating conditions.

Questions about b.dry?

Do you have questions about b.dry chains, their applications, or suitable operating conditions? Get in touch with us. Our experts will be happy to help you find the right chain solution for your application.

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