Rhombus 391 Central Locking Casters

The 391 series is a Rhombus product.

  • Improved braking system in swivel and wheel
  • Precision bearings in raceway
  • Precision bearings in 35K wheel; flange bearing in 32C wheel
  • Caster meets ISO Standard 22882: 2004 Caster & Wheels – Requirements for Casters for Hospital Beds
  • Central-locking brake design has very positive swivel lock – operates independently of the wheel brake, reducing wear and tendency to ratchet
  • Wheel brake can be applied dynamically without damage to mechanism
  • Factory-set mechanism, maintenance-free for the life of the caster
  • Stem with M8 fixing holes to suit all bed layouts and reduce stock holding


35K Thermoplastic Rubber35K Thermoplastic Rubber

  • Tread: Grey Thermo Plastic Rubber
  • Side: Plastic Thread Guard
  • Hardness: 80 (±5) Shore A
  • Capacity: Up to 220 pounds
  • Bearings: Precision Ball

32C Natural Solid Rubber Wheel32C Natural Solid Rubber

  • Tread: Blue/Grey natural solid rubber molded on stamped steel rim
  • Side:: Metal Thread Guard
  • Hardness: 80 (±5) Shore A
  • Capacity: Up to 240 pounds
  • Bearings: Flanged Ball

Rhombus 391 mounting options include Free Swivel, Total Lock, and Directional and Total Lock combination models.

  • Care Beds
  • Hospital Beds
  • Intensive Care Beds
  • OR Beds and Tables
  • Stretchers
  • Gurneys
  • Ultrasonic Equipment

391 Catalog Pages

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