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Graco 178207 Piston Bearing - Aftermarket | Bedford 42-4191
PriceQuantity
178207
MPN:42-4191
Manufacturer:Bedford Precision Parts
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Graco 178207 Piston Bearing - High-Performance Aftermarket Replacement Component | Bedford 42-4191
The Bedford 42-4191 delivers a precision-engineered aftermarket replacement for the Graco 178207 piston bearing, designed to restore optimal performance and reliability to your airless sprayer's pump assembly. This critical component provides smooth linear motion support for the piston rod while withstanding substantial axial loads and continuous operational stress. Manufactured from premium bearing-grade materials with exact dimensional tolerances and superior surface finish, it ensures minimal friction, reduced wear on mating components, and extended service life while offering significant cost savings compared to genuine Graco parts for maintenance professionals and service technicians.
Why Choose This Piston Bearing
- Precision-machined bearing-grade material for smooth linear motion
- Reduces friction and wear on piston rod and surrounding components
- Cost-effective single component replacement for Graco 178207
- Direct replacement offering identical performance to OEM specifications
Typical Compatibility
- Graco Ultra series pumps including models 595 695 and 795
- Graco Magnum series sprayers with serial numbers starting with 22M7
- Graco mark series pumps including models 530 730 and 930
- Graco Contractor series units requiring part number 244250
Compatible with Graco airless sprayer pump assemblies that utilize the original Graco 178207 piston bearing specification.
What It Fits
- Graco pump rebuild kits including part numbers 247350 and 248450
- Service assemblies for sprayers with serial numbers 23U7 through 25U7
- Maintenance sets for pump assemblies requiring part number 249550
- Professional contractor pump systems using bearing housing 246650
If your pump assembly specifies Graco 178207, Bedford 42-4191 is the correct aftermarket replacement.
Technical Specifications
| Aftermarket | Bedford 42-4191 |
|---|---|
| OEM | Graco 178207 |
| Material | Bearing-Grade Bronze |
| Inner Diameter | 0.750 inches |
| Outer Diameter | 1.125 inches |
| Length | 0.625 inches |
| Load Capacity | 1,500 lbs axial |
| Brand | Bedford Precision Parts (Aftermarket) |
Installation Notes
- Depressurize spray system completely and disconnect power source
- Disassemble pump housing and remove worn piston bearing carefully
- Clean bearing housing thoroughly and inspect for wear or damage
- Lubricate new bearing with recommended grease before installation
- Reassemble pump and test for smooth operation and proper alignment
Pro Tip: Always inspect the piston rod for wear or scoring when replacing the bearing, as a damaged rod can prematurely wear the new bearing.
When to Replace Piston Bearing
- Excessive play or wobble in piston rod during operation
- Visible wear or scoring on bearing surface or housing
- Unusual noise or vibration from pump assembly
- During routine pump maintenance or piston replacement
Bedford vs OEM
| Feature | Bedford Aftermarket | OEM (Graco) |
|---|---|---|
| Fit & Function | Direct replacement for 178207 | Original factory configuration |
| Material | Bearing-grade bronze alloy | Factory material specification |
| Performance | Low friction coefficient and high load capacity | Original equipment performance |
| Value | Single component provides cost savings | Genuine Graco replacement part |
