| Coupling | Synthetic Rubber | Polyurethane | H-Trans | Pilot Drill Size | Max. Bore D | ØA | Length thru' Bore L1 | ØB | Gap G | ØE | DBSE | Overall Length TL1 | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Size | Rated Torque (Nm) | kW @ 100 rpm | Rated Torque (Nm) | kW @ 100 rpm | Rated Torque (Nm) | kW @ 100 rpm | SW/RRS | L | ||||||||
| RRS | 150 | 141 | 1.5 | 211.5 | 2.2 | 352.5 | 3.7 | - | 48 | 111 | 96 | 45 | 80 | 3 | 35 | 100 | 115 |
The RRS 150 is a robust "Radially Removable Spacer" (RRS) coupling designed for high-horsepower industrial drives. It serves as a premium solution for connecting large motors to pumps and machinery where a 100 mm gap is required between shaft ends. As one of the larger models in the RRS series, it is engineered to provide massive torque capacity while maintaining the "drop-out" functionality that defines the Snap Wrap system.
The RRS 150 is built for heavy industrial scale, offering a significant jump in physical size and power handling:
| Specification | Metric Value |
| Rated Torque (Synthetic Rubber) | 141 Nm |
| Rated Torque (Polyurethane) | 211.5 Nm |
| Rated Torque (H-Trans) | 352.5 Nm |
| Power Rating @ 100 RPM | 1.5 kW (Rubber) / 2.2 kW (PU) |
| Maximum Bore Capacity (D) | 48 mm |
| Outside Diameter (ØA) | 111 mm |
| Distance Between Shaft Ends (DBSE) | 100 mm |
| Overall Length (TL1) | 115 mm |
The RRS 150 combines the strength of a jaw coupling with the convenience of a removable center section:
Bridging the Span: The coupling utilizes a center spacer to span a 100 mm DBSE. This length is ideal for providing the necessary clearance to pull out a pump’s rotating assembly.
Flexible Power Transmission: Torque is transferred via the "Snap Wrap" elastomer. This element sits in compression between the interlocking jaws, absorbing shock and vibration.
Radial "Drop-Out" Maintenance: By loosening the retaining hardware, the entire center spacer assembly—including the elastomer—can be removed radially. This allows technicians to perform maintenance on the driven machine without moving the motor from its base.
High Torque Density: Capable of handling up to 352.5 Nm of torque with an H-Trans element, making it suitable for large industrial motors.
Rapid Maintenance: The radially removable design eliminates the need for expensive and time-consuming laser re-alignment after a pump seal change.
Large Shaft Compatibility: With a 48 mm maximum bore, it accommodates the larger shafts typically found on NEMA or IEC frame motors in this power class.
Fail-Safe Operation: The metal-to-metal contact of the jaws ensures that power transmission continues in an emergency, even if the elastomeric element is completely worn.
No Lubrication Required: The dry design makes it ideal for harsh or clean environments where grease or oil is undesirable.
The RRS 150 is the standard choice for "Back Pull-Out" systems in heavy industry:
Large Centrifugal Pumps: Used in municipal water treatment and heavy chemical processing.
Industrial Agitators: Spanning the gap between the drive motor and the mixing vessel shaft.
Fan & Blower Drives: Managing high-inertia loads in industrial ventilation systems.
Compressors: Providing a flexible, maintenance-friendly link between the motor and the compression unit.
The RRS 150 is a powerhouse in the spacer coupling category. By providing a 100 mm DBSE and a massive 48 mm bore capacity, it meets the requirements of the most demanding industrial drive trains. It is the perfect investment for facilities looking to maximize uptime by simplifying the most common maintenance tasks on their rotating equipment.
