Zurn Marland Ringspan RMS-40 Sprag Clutch 2.5 Inch Bore SN RMS40

Description:

The Zurn Marland Ringspan RMS-40 Sprag Clutch is used in mechanical power transmission systems to provide one-way rotation control and backstopping. Commonly installed in conveyor drives, gearboxes, pumps, and industrial rotating equipment requiring overrunning or anti-reverse protection. Maintenance teams, OEMs, and system integrators use this part for repair, retrofit, or replacement to ensure reliable torque transmission and prevent reverse rotation damage.

Applications:

The Zurn Marland RMS-40 sprag clutch is widely used in heavy industrial environments such as material handling systems, mining conveyors, power generation equipment, and manufacturing machinery where controlled rotation, backstopping, and overrunning functions are critical for safety and operational efficiency. It is particularly suited for conveyor headshafts, fan drives, and pump systems where reverse motion must be prevented to protect equipment and maintain system integrity.

Technical Specifications:

• Manufacturer: Zurn / Marland
• Model / Part Number: RMS-40
• Product Type: Sprag Clutch (Freewheel / Backstop)
• Bore Size: 2.5 inch
• Serial Number: SN 4350
• Function: One-way clutch for overrunning, backstopping, and indexing
• Design: Sprag-type freewheel clutch with internal sprags
• Operation: Transmits torque in one direction, freewheels in the opposite direction
• Construction: Integrated ball bearings and seals
• Material: Hardened steel with chromium-carbide sprags for wear resistance
• Lubrication: Oil or grease lubricated design
• Mounting: Shaft-mounted with keyway and bolt circle for external attachment
• Application: Industrial drive systems and rotating machinery

Common Replacements:

• Marland RMS-50 Sprag Clutch
• Formsprag FSO Series Sprag Clutch
• Stieber CSK Series One-Way Clutch