| 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 | 300 | 3047 | 31.9 | 4570.5 | 47.9 | - | - | 30 | 105 | 272 | - | 115 | 180 | 3 | - | - | 283 |
The SW 300 is the pinnacle of the standard "Snap Wrap" jaw coupling series, engineered for high-demand industrial environments. Designed to bridge the gap between heavy-duty performance and ease of maintenance, the SW 300 is the go-to solution for large-scale power transmission. Its defining characteristic is the ability to transmit massive torque while allowing for radial element replacement, ensuring your machinery stays online longer with less effort.
The SW 300 is built for scale, offering the highest torque and bore capacities in the SW range:
| Specification | Metric Value |
| Rated Torque (Synthetic Rubber) | 3047 Nm |
| Rated Torque (Polyurethane) | 4570.5 Nm |
| Power Rating @ 100 RPM | 31.9 kW (Rubber) / 47.9 kW (PU) |
| Maximum Bore Capacity (D) | 105 mm |
| Overall Length (TL1) | 283 mm |
| Outside Diameter (ØA) | 272 mm |
| Approximate Weight | 81 kg |
The SW 300 functions as a torsionally flexible compression coupling:
Power Flow: Torque is transferred from the driving hub to the driven hub via an elastomeric "Snap Wrap" element. This element is squeezed between the heavy-duty jaws of the cast-iron hubs.
The SW Advantage: Unlike standard "L" type couplings where the spider is trapped between hubs, the SW 300 uses a wrap-around element secured by a metal retaining ring.
No-Drift Maintenance: To replace a worn element, you simply remove the retaining screws and slide the ring back. The old element "unwraps" and a new one is installed in minutes—without moving the motor or the load.
Industrial Scale Power: Capable of handling nearly 4600 Nm of torque when equipped with a Polyurethane element.
Rapid Serviceability: Eliminates the need for re-alignment after maintenance, reducing typical downtime from hours to under 10 minutes.
Fail-Safe Operation: The interlocking jaw design ensures that if the elastomer is destroyed by an extreme overload, the drive remains connected for a safe, controlled shutdown.
Maintenance-Free: No lubrication, grease, or oil is ever required.
Shock Absorption: Excellent at dampening high-amplitude vibrations and protecting expensive gearboxes and motor bearings.
The SW 300 is typically found in the most grueling industrial sectors:
Mining & Quarrying: Heavy-duty conveyor drives and primary crushers.
Water & Wastewater: Large-scale centrifugal pumps and aeration blowers.
Steel & Paper Mills: Used in rollers and processing equipment where high torque and high uptime are non-negotiable.
Power Generation: Connection of large diesel engines to generators or auxiliary equipment.
The SW 300 represents the "heavyweight" of the Snap Wrap family. With a massive 105 mm bore capacity and a power rating that reaches 47.9 kW @ 100 RPM, it provides the strength of a rigid coupling with the maintenance ease of a modular system. It is the ideal choice for engineers who cannot afford the time or labor costs of moving heavy machinery for simple coupling maintenance.
