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Metal contact arm assembly with ball bearings and pulley, half-inch width

Zoro Select

Zoro Select 33RJ27 Contact Arm Set 1/2 In

SKU CH-MG6Z-KX5C1

A contact arm set with two ball bearings, two platen pads, idle pulley and pin for Speedaire model 31XG57 pneumatic tools

  • Compatible with Speedaire series tools for reliable integration
  • Fits manufacturer model 31XG57 ensuring correct replacement
  • Includes two ball bearings two platen pads idle pulley and pin for complete assembly
  • Constructed from alloy polyurethane steel and zinc for durable performance
  • Designed for 1/2 inch belt width matching system requirements

Zoro Select 33RJ27 Contact Arm Set

The Zoro Select 33RJ27 is a contact arm set designed for pneumatic systems using Speedaire tools. It fits manufacturer model 31XG57 and includes two ball bearings, two platen pads, an idle pulley and a pin. The assembly is built from alloy, polyurethane, steel and zinc with a belt width of one half inch. It serves as a mechanical linkage for position feedback and control within compatible pneumatic equipment.

Sustained pneumatic operation performance

Under continuous pneumatic cycling the alloy, steel and zinc construction resists wear while the polyurethane platen pads maintain consistent contact. The two ball bearings reduce friction during repeated actuation, helping the linkage transmit motion smoothly over long duty cycles. The idle pulley and pin remain secure through extended use without additional adjustment. This combination supports reliable position feedback in demanding pneumatic control interfaces.

Thermal noise and power characteristics

The component operates passively within the pneumatic circuit, generating no electrical heat or audible noise of its own. System temperature and sound levels depend on the compressor and tooling rather than the contact arm set. Power draw is determined by the pneumatic supply pressure and actuator demand, not by this linkage. The materials withstand typical compressed-air environments without degradation.

Highlights

  • Compatible with Speedaire series tools for reliable integration
  • Fits manufacturer model 31XG57 ensuring correct replacement
  • Includes two ball bearings two platen pads idle pulley and pin for complete assembly
  • Constructed from alloy polyurethane steel and zinc for durable performance
  • Designed for 1/2 inch belt width matching system requirements

Specifications

BrandSPEEDAIRE

Questions about this item

How much heat or noise does the 33RJ27 contact arm add when the compressor runs continuously?

The arm is a passive mechanical linkage with ball bearings and a polyurethane pad; it generates no heat and adds no audible noise during all-day operation.

Which Speedaire tool must I already own for the 33RJ27 to install and function?

The contact arm is specified to fit Speedaire model 31XG57, so that tool must be present for correct installation and operation.

Will the 33RJ27 work with the older 31XG57 Speedaire model I still use?

Yes, the arm is explicitly designed for model 31XG57 and includes the matching bearings, platen pads, idle pulley and pin for that series.

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