SHT drylin® stainless steel linear modules

Wherever lubrication must be dispensed with and where machine components are in contact with food, strong cleaning agents or even chemicals, stainless steel is necessary. To minimise maintenance and cleaning effort, igus® has developed linear modules and linear axes for just this scenario - drylin^® linear axes made of stainless steel.

Would you like more information about drylin® linear drives or do you need an individual consultation? Our experts will be happy to get in touch with you.

SHT - Hygienic design

• FDA-compliant
• For washdown
• Wide gaps

SHT-ES

• Sizes from 8mm shaft diameter to 30mm
• Max stroke length 1500 with SHT-ES-30
• Choice of FDA liners

SLW-ES - Stainless steel version

• Various plain bearing materials
• FDA-compliant with iglidur® A180 plain bearing
• High temperature iglidur® X,  up to +250 °C

ZLW stainless steel linear axis

• Flat system height of 40mm
• Stroke lengths up to 2000mm
• 304 stainless steel or 316 stainless steel

drylin® technical accessories

• Accessories for manual positioning
• Format adjustment
• Assembly and fastening options

drylin® overview

• Don't need stainless steel?
• Need a full overview of other drylin® linear systems?

Hardened stainless steel

Linear axis guides of hardened stainless steel are usually offered in combination with recirculating ball bearing systems and roller bearing guides. The guide system's metal balls require a strong running surface to prevent them from creating grooves. Hardened stainless steel such as AISI 420C, AISI 440B and AISI 440C has a relatively high carbon content (more than 0.5%), which is necessary for hardening in the first place. This means that hardened stainless steel is only somewhat corrosion-resistant. The necessary lubrication for recirculating ball bearing systems and roller bearing guides entails a danger of contaminating products, which is undesirable in many areas.

Non-hardened stainless steel

Non-hardened stainless steel has a lower carbon content and inferior hardness, but is much more resistant to corrosion and aggressive cleaning agents and chemicals. Because recirculating ball bearing systems and roller bearing guides are not as well suited to moving on non-hardened stainless steel, a plain bearing system is used. The force exerted at particular points on the rail material is changed to area force. The load on the linear rail is distributed across a greater area, avoiding material wear.