| 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 | ||||||||||||
| L | 95 | 21.10 | 0.22 | 31.7 | 0.33 | 52.8 | 0.55 | - | 28 | 65 | 54 | 25 | 49 | 2 | 19 | 90 | 63 |
The L 95 Jaw Coupling (often referred to as L095) is a torsionally flexible, fail-safe coupling designed for medium-duty industrial power transmission. It consists of two metal hubs—typically made of Cast Iron for this size—and a flexible "spider" insert. It is engineered to transmit torque while protecting machinery from vibration, shock loads, and shaft misalignment.
The performance of the L 95 depends on the spider material selected. Below are the ratings based on the technical data:
| Specification | Synthetic Rubber (NBR) | Polyurethane | H-Trans / Hytrel |
| Rated Torque (Nm) | 21.10 | 31.7 | 52.8 |
| Power @ 100 rpm (kW) | 0.22 | 0.33 | 0.55 |
| Power @ 1500 rpm (kW) | 3.30 | 4.95 | 8.25 |
Outside Diameter (ØA): 54 mm
Max Bore (D): 28 mm
Overall Length (TL1): 63 mm
Hub Diameter (ØB): 49 mm
Length thru' Bore (L1): 25 mm
Gap (G): 2 mm
Direct Drive: The two hubs are fixed onto the driving and driven shafts.
Compression: Torque is transmitted via the compression of the elastomeric spider legs between the metal jaws of the hubs.
Flexibility: The spider material deforms slightly to absorb mechanical shocks and compensates for angular (up to 1°) and parallel (up to 0.4mm) misalignments.
Fail-Safe: In the event of spider failure, the metal jaws interlock directly, maintaining power transmission until the system can be safely stopped.
Vibration Damping: Reduces noise and protects sensitive internal components of the motor and gearbox.
Maintenance-Free: Requires no lubrication or grease, making it ideal for clean environments.
Ease of Inspection: The spider can be visually inspected for wear without disassembling the entire coupling.
Durability: Cast iron hubs provide higher strength and wear resistance compared to the smaller sintered iron L-series models.
Interchangeability: The L 95 is an industry-standard size compatible with major brands like Lovejoy and Rathi.
The L 95 is a versatile choice for a wide range of rotating equipment:
Pumps & Compressors: Centrifugal pumps and medium-sized air compressors.
Conveyors: Belt drives and material handling systems.
Industrial Fans: HVAC blowers and ventilation units.
Hydraulic Units: Connecting electric motors to hydraulic pumps.
Mixers: Agitators and processing equipment in chemical or food industries.
The L 95 is a robust medium-duty coupling that balances a compact size (54 mm OD) with a high torque capacity (up to 52.8 Nm). With a maximum bore of 28 mm, it is the ideal "bridge" coupling for systems that have outgrown the light-duty L 75 but do not yet require the bulk of the L 100 series.
