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Graco 287832 Piston Rod Aftermarket | Bedford 57-4076
PriceQuantity
287832
MPN:57-4076
Manufacturer:Bedford Precision Parts
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Graco 287832 Piston Rod Replacement for Airless Sprayers Aftermarket by Bedford 57-4076
The Bedford 57-4076 Piston Rod is a premium aftermarket replacement engineered for the Graco 287832 Piston Rod used in a wide range of professional and industrial-grade airless paint sprayers. This precision-machined component transfers the linear motion from the air motor to the fluid section, providing consistent pump performance and maintaining optimal pressure for a smooth, uniform spray pattern. Manufactured from hardened stainless steel for superior strength and corrosion resistance, the Bedford 57-4076 offers durability equal to or exceeding OEM standards—ideal for heavy-duty use in high-output environments such as coatings, epoxy, and waterproofing applications. By choosing this aftermarket piston rod, contractors can reduce maintenance costs while maintaining OEM-level fit, alignment, and efficiency in every stroke.
Why Choose This Piston Rod
- Direct replacement for the OEM Graco 287832, ensuring exact length and tolerance.
- Precision-ground rod surface minimizes seal wear and extends packing life.
- Resists bending, scoring, and pitting under continuous high-pressure operation.
- Restores original spray consistency and fluid displacement accuracy.
Typical Compatibility
- Graco 3900, 5900, and 7900 LineLazer and Mark Series sprayers
- GH and GMAX hydraulic airless paint sprayers
- Other Graco models using 287832 piston rod assemblies
Always verify compatibility using your equipment’s parts manual or lower assembly chart before purchase.
Technical Specifications
| Aftermarket | Bedford 57-4076 |
|---|---|
| OEM | Graco 287832 |
| Fits | Graco GMAX, GH, Mark V/VII/X, LineLazer 3900–7900 (verify model) |
| Type | Piston rod (pump lower linkage component) |
| Material | Hardened stainless steel, precision-ground and polished |
| Function | Transfers drive energy from the air or hydraulic motor to the fluid pump |
| Pressure Rating | Up to 7250 PSI (50 MPa) nominal system capacity |
| Brand | Aftermarket by Bedford Precision Parts; replaces Graco |
Installation Notes
- Shut down and relieve all system pressure before disassembly.
- Detach the fluid section from the motor; inspect connecting seals and bearings.
- Apply a thin coat of lubricant to the piston rod before inserting into the packing set.
- Torque connecting fasteners according to the manufacturer’s service manual.
- Cycle the sprayer slowly to confirm smooth motion and seal alignment before full pressure use.
Tech Tip: Replace the piston rod whenever packings or cylinder sleeves are rebuilt to maintain maximum sealing efficiency and rod alignment.
When to Rebuild / Replace
- Noticeable scoring or scratches on the piston rod surface
- Frequent packing leaks or premature packing wear
- Reduced pressure output or uneven spray pattern
- Rod corrosion after long solvent exposure
Bedford vs OEM (Graco)
| Feature | Bedford Aftermarket (57-4076) | OEM (Graco 287832) |
|---|---|---|
| Fit & Function | Exact OEM dimensions for seamless installation | Original equipment specification |
| Material | Hardened stainless steel with mirror-finish surface | High-grade polished steel |
| Durability | Tested for long wear life and corrosion resistance | Factory-certified performance |
| Availability | If in stock, ships from Bedford Precision Parts in Bedford Hill, New York. | Ships per OEM distribution schedule |
| Value | Lower replacement cost with OEM-level quality assurance | Higher purchase cost |
Frequently Asked Questions
It replaces the Graco 287832 Piston Rod used in multiple Graco GMAX, GH, Mark, and LineLazer series airless sprayers.
Yes. It is machined from hardened stainless steel and polished to reduce friction and packing wear during operation.
Yes, but it’s best practice to replace packings whenever you replace the piston rod to maintain optimal sealing performance.
Absolutely. The Bedford 57-4076 is designed for continuous use up to 7250 PSI and handles high-solids or solvent-based coatings efficiently.
When in stock, Bedford aftermarket parts typically ship within 24 hours from our Bedford Hill, NY warehouse.
Need a durable, high-precision piston rod replacement? Order the Bedford 57-4076 today to restore smooth, efficient pumping performance to your Graco sprayer.
