| 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 | ||||||||
| SW | 295 | 1279 | 13.4 | 1918.5 | 20.1 | - | - | 30 | 95 | 253 | 237 | 95 | 162 | 3 | 80 | - | 238 |
The SW 295 is a heavy-duty model within the SW Series of jaw-type flexible couplings. Renowned for its "Snap Wrap" design, this coupling is engineered to provide high-capacity power transmission while offering the unique advantage of radial element replacement. Unlike standard couplings that require moving the motor or driven equipment for maintenance, the SW 295 allows for quick service, significantly reducing industrial downtime.
Based on standard engineering data for the 295 size, here are the technical benchmarks:
| Specification | Metric Value |
| Rated Torque (Synthetic Rubber) | 1279 Nm |
| Rated Torque (Polyurethane) | 1918.5 Nm |
| Power Rating @ 100 RPM | 13.4 kW (Rubber) / 20.1 kW (PU) |
| Maximum Bore Capacity (D) | 95 mm |
| Overall Length (TL1) | 238 mm |
| Outside Diameter (ØA) | 253 mm |
| Gap (G) | 3 mm |
The SW 295 operates as a compression-type flexible coupling. It consists of two precision-machined metallic hubs with protruding "jaws" and an elastomeric insert (often called a spider or snap-wrap element).
Torque Transfer: Power is transmitted from the driving hub to the driven hub through the legs of the elastomer. These legs are compressed between the interlocking jaws.
Misalignment Compensation: The flexible nature of the element allows the coupling to absorb angular, parallel, and axial misalignments, protecting bearings and shafts from premature wear.
The "Snap Wrap" Mechanism: The "SW" designation refers to the radially removable element. A retaining ring holds the element in place; once the ring is moved, the element can be "wrapped" around the hubs and secured, allowing for maintenance without axial movement of the machinery.
Reduced Downtime: The standout feature is the ability to replace the elastomer without dismantling the entire drive train.
Fail-Safe Design: In the unlikely event of elastomer failure, the metal jaws will interlock, allowing the drive to continue (though with noise) until an orderly shutdown can occur.
Vibration Damping: The elastomeric material absorbs shock loads and dampens system vibrations, leading to quieter operation and longer equipment life.
No Lubrication Required: Unlike gear or grid couplings, the SW 295 is completely maintenance-free regarding lubrication.
Environmental Resistance: Available in materials like Polyurethane for higher torque and chemical resistance, or Synthetic Rubber for superior damping.
The SW 295 is ideal for medium-to-heavy industrial applications where uptime is critical:
Pumps & Compressors: Maintaining alignment in fluid handling systems.
Conveyor Systems: Handling the high-start torque of material handling.
Gearboxes: Acting as a protective link between motors and industrial reducers.
Fans & Blowers: Managing rotational inertia and damping resonance.
The SW 295 Jaw Coupling is a robust, versatile, and user-friendly solution for high-torque applications. By combining a substantial power rating (up to 20.1 kW @ 100 RPM) with the innovative "Snap Wrap" design, it provides an optimal balance between mechanical performance and maintenance efficiency. Whether you are upgrading an existing drive or designing a new system, the SW 295 ensures reliable power transmission with minimal hassle.
