L 50 - AXIS GS Couplings

Coupling		Power Rating						Pilot Drill Size	Max. Bore D	ØA		Length thru' Bore L1	ØB	Gap G	ØE	DBSE
Coupling		Synthetic Rubber		Polyurethane		H-Trans				SW/ RRS	L
Type	Size	Rated Torque (Nm)	kW @ 100 rpm	Rated Torque (Nm)	kW @ 100 rpm	Rated Torque (Nm)	kW @ 100 rpm			SW/ RRS	L
50	2.80	0.03	4.2	0.04	7.0	0.07	-	16	-	27	15	27	1	-	-	42

The L 50 Jaw Coupling is a robust, versatile power transmission component designed for light-to-medium industrial applications. Stepping up from the precision-focused smaller models, the L 50 provides a significant increase in torque capacity—offering 2.80 Nm with standard synthetic rubber and up to 7.0 Nm when paired with high-performance H-Trans inserts. This model is engineered to bridge the gap between small instrumentation and heavier industrial machinery, providing a reliable "fail-safe" connection that ensures continuous operation even in the event of elastomeric spider wear.

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Key Specifications

The L 50 offers a balanced profile for diverse mechanical needs. According to the technical data sheet, its primary specifications include:

Rated Torque: 2.80 Nm (Rubber), 4.2 Nm (Polyurethane), or 7.0 Nm (H-Trans).
Power Rating: Up to 0.07 kW at 100 rpm depending on the insert material.
Max Bore (D): Supports shaft diameters up to 16mm.
Overall Length (TL1): 42mm, providing a stable contact area for shaft engagement.
Hub Diameter (ØB): 27mm, maintaining a slim profile for compact machinery.

How It Works

The L 50 facilitates power transmission through a specialized elastomeric compression process:

Mechanical Interlocking: Two metal hubs with three or more protruding jaws mesh together around a central spider.
Torsional Flexibility: The spider acts as a cushion, allowing the coupling to twist slightly under load to absorb sudden torque spikes.
Safe Failure Mode: In extreme overload conditions where the spider might fail, the metal jaws overlap to maintain drive, allowing for a controlled system shutdown.

Benefits

The L 50 is a popular choice for engineers due to its specific performance advantages:

Increased Load Capacity: Offers significantly higher torque than the L 35 without a massive increase in physical size.
Material Versatility: Can be upgraded with H-Trans or Polyurethane spiders to meet higher temperature or torque requirements.
Simplified Installation: The straightforward jaw design allows for quick assembly and easy visual inspection of the spider.
Acoustic Isolation: Effectively reduces the "hum" and mechanical noise transmitted through the drivetrain.

Applications

The L 50 size is commonly utilized across various industrial and commercial sectors, including:

Small Pumps: Ideal for chemical dosing pumps and water circulation systems.
Conveyor Drives: Used in light-duty material handling and packaging lines.
Fans and Blowers: Connecting motors to ventilation fans where vibration reduction is necessary.
Food Processing: Found in mixers and agitators requiring clean, non-lubricated components.

Summary

The L 50 Jaw Coupling is a highly adaptable component that provides a rated torque of 2.80 Nm to 7.0 Nm. With a 16mm maximum bore and an overall length of 42mm, it serves as the industry standard for small motor applications requiring a balance of strength, flexibility, and maintenance-free operation.