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Ru-Steel

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Ru-Steel

Ru-Steel is a manufacturer of elastic and flexible couplings for industrial drive applications. The company supplies an extensive range of coupling hubs, elastomers and complete coupling units used for power transmission between motors, pumps, compressors and other drive machines. Ru-Steel couplings are compatible with the widely used Rotex coupling standard and are therefore interchangeable with couplings from other manufacturers using the same standard.

The elastic couplings from Ru-Steel are designed to absorb shocks, vibrations and alignment errors in drive systems. The coupling hubs are available in bored versions for direct mounting on a shaft, and in unbored versions that can be customized to the desired shaft diameter with keyway or shrink disc. This provides maximum flexibility when designing drive systems.

The elastomers (elastomeric elements) from Ru-Steel are available in various Shore hardness grades and material types, including polyurethane (PU), NBR rubber and other elastomers. The choice of the correct elastomer depends on the torque to be transmitted, the shock load present, the operating temperature and the chemical environment. Soft elastomers provide more damping of shocks and vibrations, while harder elastomers allow higher torque values.

Verkopershulp.nl supplies the complete Ru-Steel coupling range, including coupling hubs in various sizes (21, 24, 28, 38, 42, 48, 55, 65 mm Rotex-equivalent sizes), elastomers in various hardness grades (Shore A 98, 92, 64) and complete coupling units. Most sizes are directly available from our European stock for fast delivery for planned maintenance or breakdowns.

Ru-Steel couplings are used in combination with electric motors, hydraulic pumps, compressors, generators and various other machines. The simple assembly and replacement of the elastomer without dismantling the entire coupling makes Ru-Steel couplings particularly attractive for preventive maintenance in industrial installations.

History

Ru-Steel has specialized in the production of elastic couplings designed for compatibility with the industry-standard Rotex coupling dimensions. The company supplies couplings to industrial customers in Europe who are looking for reliable and cost-effective alternatives to OEM couplings. Through the focus on quality and dimensional compatibility, Ru-Steel has established a stable position in the market for industrial couplings, with products distributed through specialized industrial suppliers such as Verkopershulp.nl.

Product Categories

  • Coupling

Applications

  • Power transmission between electric motors and pumps
  • Coupling of compressors and drive motors
  • Drive coupling in the mechanical engineering industry
  • Vibration damping in generators and dynamos
  • Coupling of hydraulic pumps in power units
  • Drive of fans and air compressors
  • Connection of motors with gearboxes
  • Coupling in the food industry and packaging lines
  • Shock absorbers in heavy industrial drives
  • Flexible coupling in HVAC and climate installations

Frequently Asked Questions

Are Ru-Steel couplings compatible with Rotex coupling sizes?
Yes, Ru-Steel couplings are designed for compatibility with the Rotex coupling standard. The coupling hubs and elastomers are dimensionally compatible with Rotex GS series couplings and can be used as direct replacements. Verkopershulp.nl supplies Ru-Steel couplings in the common Rotex-equivalent sizes (GS14, GS19, GS24, GS28, GS38, GS42, GS48, GS55, GS65).
What is the difference between a bored and unbored Ru-Steel coupling hub?
A bored Ru-Steel coupling hub is already finished with a precise bore for a specific shaft diameter, including keyway. An unbored hub has a pre-machined opening that can be bored to the desired shaft diameter and provided with a keyway as desired. Unbored hubs offer maximum flexibility for custom work.
What Shore hardness should I choose for my Ru-Steel elastomer?
The choice of Shore hardness depends on the drive conditions. Shore A 64 (soft) is suitable for applications with high shock load and vibration damping. Shore A 92 (medium) is the most commonly used standard hardness for normal applications. Shore A 98 (hard) is used for high torque values and limited damping. When in doubt, Verkopershulp.nl recommends the medium hardness as a starting point.
How frequently should Ru-Steel coupling elastomers be replaced?
The service life of coupling elastomers depends on the load, ambient temperature and the alignment accuracy of the coupling. As preventive maintenance, it is recommended to inspect the elastomer every 2-4 years and replace at signs of wear, cracks or deformation. Verkopershulp.nl supplies replacement elastomers for quick replacement during planned maintenance.
Are Ru-Steel coupling hubs also available for larger shaft diameters?
Ru-Steel coupling hubs are available in sizes supporting shaft diameters from small dimensions (5-6 mm) to larger diameters (more than 60 mm), depending on the coupling size. For the larger coupling sizes (GS55, GS65 and larger), hubs are available that can handle larger shaft diameters. Verkopershulp.nl can inform you about the available bore ranges.
Does Verkopershulp.nl also supply complete Ru-Steel coupling units?
Yes, Verkopershulp.nl supplies complete Ru-Steel coupling units consisting of two coupling hubs and the associated elastomer. You can also order the components separately: hubs and elastomers are available individually. This enables flexible ordering where you only replace the worn elastomer without dismantling the entire coupling.
What is the maximum torque capacity of Ru-Steel elastic couplings?
The maximum torque capacity of Ru-Steel couplings varies by size and hardness class of the elastomer. The smallest sizes (Rotex 14/19) are suitable for torques up to approximately 20-60 Nm, while the larger sizes (Rotex 65) can transmit torques up to 1050 Nm or more. Verkopershulp.nl can provide the technical specifications per size and hardness.