| Coupling | Power Rating | Pilot Drill Size | Max. Bore D | ØA | Length thru' Bore L1 | ØB | Gap G | ØE | DBSE | Overall Length TL1 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | Size | Synthetic Rubber | Polyurethane | H-Trans | SW/ RRS | L | |||||||||||
| Rated Torque (Nm) | kW@ 100 rpm | Rated Torque (Nm) | kW@ 100 rpm | Rated Torque (Nm) | kW@ 100 rpm | ||||||||||||
| SW | 99 | 46.40 | 0.49 | 69.6 | 0.73 | 116 | 1.2 | - | 30 | 78 | 65 | 27 | 51 | 2 | 27 | 100 | 72 |
SW 99 Jaw Flex Coupling: Enhanced Power & Easy Maintenance The SW 99 is a high-performance industrial coupling engineered for medium-duty power transmission. As part of the SW (Snap Wrap) series, its standout feature is the radially removable element, which allows for rapid maintenance and inspection without the need to move connected equipment or disturb shaft alignment.
The SW 99 offers significantly higher power ratings compared to smaller models:
Torque Capacity:
Synthetic Rubber: 46.40 Nm.
Polyurethane: 69.6 Nm.
H-Trans: 116 Nm.
Power Rating: 0.49 kW at 100 rpm (using Synthetic Rubber).
Maximum Bore Diameter: 30 mm.
Dimensions:
Outside Diameter ($\varnothing$A): 78 mm.
Overall Length (TL1): 72 mm.
Gap (G): 2 mm.
DBSE (Distance Between Shaft Ends): 100 mm.
Hub Material: High-grade cast iron for structural integrity under heavy loads.
The SW 99 operates on a simple yet effective compression principle:
Power Transfer: Two metallic hubs with interlocking "jaws" trap a flexible elastomeric spider in the center.
Vibration Absorption: As the motor spins, the spider absorbs the initial shock and constant vibration, protecting the driven machinery.
The SW Advantage: The "Snap Wrap" design uses a retaining ring. When the ring is removed, the flexible element can be pulled out from the side (radially), making it much faster to service than standard "L" type couplings.
High Torque-to-Size Ratio: Delivers up to 116 Nm of torque within a compact 78 mm diameter frame.
Rapid Serviceability: Drastically reduces downtime; you can replace the internal element in minutes without unbolting the motor.
Maintenance-Free: Requires no lubrication or grease, making it clean and cost-effective over its lifespan.
Durable Design: The cast iron hubs are resistant to atmospheric conditions and industrial debris.
Safety First: The jaw-on-jaw design is "fail-safe," meaning the coupling will continue to work even if the spider fails in an emergency.
The SW 99 is ideal for machinery that requires higher torque but has limited space for maintenance:
Industrial Pumps: Specifically high-flow water or chemical pumps.
Gearboxes: Connecting electric motors to gear reducers.
Mining & Construction: Conveyor belt drives and material processing units.
Textile & Paper Mills: Reliable for rollers and rotating drums where cleanliness (no oil) is required.
The SW 99 is the perfect "step up" for industrial operators who need more strength than the SW 95 but still want the convenience of the radial-removal system. With its ability to handle up to 116 Nm of torque and a 30 mm bore, it provides a reliable, fail-safe link that keeps your production lines running with minimal maintenance.
