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Graco 103075 Ball Bearing

The Graco 103075 Ball Bearing is a stainless steel precision sphere used in Graco pump/valve assemblies that call out this spec, ensuring proper check-valve sealing and smooth operation.

  • Diameter: 0.438 in (≈ 11.1 mm)
  • Material: Stainless steel
  • Fits/Used In: Graco Fire-Ball 15:1 pump series, and regulators/couplers that specify #103075
  • Function: Check-valve / bearing element
  • Verify: Match your model’s parts list for 103075

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Graco 103075 Ball Bearing — Details & Compatibility

Compatible Machines

  • Graco Fire-Ball 15:1 pump series
  • Graco fluid regulators / couplers that specify part #103075 (check model service manual)

The Graco 103075 Ball Bearing is a stainless steel sphere used in various Graco pump, valve, and regulator assemblies. It provides precise seating and low-friction motion in check-valve and bearing applications where an ≈ 11.1 mm (0.438 in) ball is specified.

Technical Specifications

Part Number 103075
Type Ball Bearing (precision sphere)
Material Stainless steel
Diameter (approx.) 0.438 in (≈ 11.1 mm)
Typical Use Check-valve / bearing element in Graco pumps, regulators, and couplers that call out 103075

Frequently Asked Questions

If your parts diagram lists 103075 or a stainless ball of ≈ 0.438 in / 11.1 mm, this is the correct item. For different sizes or materials, match the exact specification provided by Graco.

In many models it serves as a check-valve or bearing element within the pump or regulator. Its precise placement varies by assembly; refer to your machine’s exploded view.

Stainless steel, chosen for durability, corrosion resistance, and dimensional accuracy.

Yes. Check-valve performance depends on a precise seat match. Use the exact 0.438 in (≈ 11.1 mm) size specified for your assembly to ensure proper sealing and wear life.

Inspect the seat for wear or contamination, replace associated seals if recommended, and assemble per the service manual torque and order. Cleanliness is critical for long service.

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