Zurn Marland Ringspan RMS-47 40 Sprag Clutch 2.5 Inch Bore RMS47

Description:

The Zurn Marland Ringspan RMS-47 40 Sprag Clutch is used in mechanical power transmission systems to provide one-way rotation control, backstopping, and overrunning protection. Commonly installed in conveyor drives, gearboxes, pumps, and industrial rotating equipment requiring anti-reverse and torque transmission control. Maintenance teams, OEMs, and system integrators use this part for repair, retrofit, or replacement to ensure reliable operation and prevent reverse rotation damage.

Applications:

The Zurn Marland RMS-47 40 sprag clutch is widely used in heavy industrial environments such as mining operations, bulk material handling systems, power generation plants, and manufacturing facilities where conveyors, fans, and pump systems require dependable backstopping and overrunning functionality to maintain safety and operational continuity. Sprag clutches are commonly applied in equipment where controlled one-directional rotation is critical to prevent system failure and equipment damage.

Technical Specifications:

• Manufacturer: Zurn / Marland (Ringspan)
• Model / Part Number: RMS-47 40
• Product Type: Sprag Clutch (Freewheel / Backstop)
• Bore Size: 2.5 inch
• 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 wear-resistant sprags
• Lubrication: Oil or grease lubricated design
• Mounting: Shaft-mounted with keyway and bolt circle
• Application: Industrial drive and rotating equipment systems

Common Replacements:

• Marland RMS-40 Sprag Clutch
• Formsprag FSO Series Sprag Clutch
• Stieber CSK Series One-Way Clutch