The Remco RollMax R440SS is a professional-grade 4-roller stainless steel pump engineered for demanding agricultural spraying, liquid transfer, and chemical application systems. Delivering up to 9.4 GPM and 150 PSI, the R440SS combines corrosion resistance, rebuild-ready serviceability, and reliable spraying performance in a compact commercial-duty pump platform.
As part of the RollMax Series, the R440SS is designed for operators running agricultural chemicals, fertilizers, herbicides, and corrosive spray solutions where stainless steel construction offers improved long-term durability and chemical resistance.
One of the major advantages of the RollMax platform is its rebuild-ready design. The R440SS can typically be serviced and rebuilt directly in the field using only basic hand tools without disconnecting the pump from the drive shaft or disturbing plumbing connections. This allows operators to minimize downtime and quickly replace wear components during peak spraying season.
The 4-roller pump design provides smooth, consistent fluid transfer with reduced pulsation for reliable spray coverage across a wide variety of applications. With a standard clockwise rotation, 5/8" shaft, and 3/4" FNPT ports, the R440SS integrates easily into PTO-driven and gas engine-driven spraying systems.
For operators looking for a corrosion-resistant roller pump built for demanding spraying applications, the Remco RollMax R440SS delivers professional-grade performance with field-serviceable simplicity.
Built for Commercial Spraying Applications
- Agricultural sprayers
- Fertilizer application systems
- Herbicide spraying systems
- Chemical transfer systems
- PTO-compatible spray rigs
- Engine-driven spraying systems
- Pest control equipment
- Truck mount spray systems
- Industrial chemical application equipment
- Custom spray skid builds
Why choose the stainless steel R440SS over cast iron?
The stainless steel construction provides improved corrosion resistance when handling agricultural chemicals, fertilizers, herbicides, and other corrosive spray solutions.
What does “Rebuild Ready” mean?
The RollMax Rebuild Ready design allows common wear components to be serviced and replaced directly in the field using basic hand tools without fully removing the pump assembly.
What direction does the R440SS rotate?
The R440SS is configured for clockwise (CW) rotation only.
Can the R440SS be used with PTO or gas engine systems?
Yes. The R440SS is compatible with PTO-driven systems and can also be adapted for gas engine drive applications using compatible coupler accessories.
Stainless Steel Construction:
Provides improved corrosion resistance for agricultural chemicals and spray solutions.
4-Roller Pump Design:
Delivers smooth, consistent flow with reduced pulsation.
Rebuild Ready Design:
Field-serviceable design allows quick maintenance using basic hand tools.
9.4 GPM Maximum Flow:
Supports high-volume spraying and transfer applications.
150 PSI Maximum Pressure:
Handles demanding commercial spraying applications.
Clockwise Rotation (CW):
Compatible with common PTO and gas engine drive configurations.
5/8" Shaft Configuration:
Works with standard couplers and mounting accessories.
3/4" FNPT Ports:
Allows straightforward plumbing integration into spraying systems.
Repair Kit Support Available:
Compatible with the R440RK Universal Repair Kit.
Gas Engine Adapter Compatibility:
Supports gas engine-driven operation using compatible coupler accessories.
| Specification | Details |
| Brand | Remco Industries |
| Series | RollMax R440 Series |
| Model / Part Number | R440SS |
| Pump Type | 4-Roller Pump |
| Body Material | Stainless Steel |
| Rotation | Clockwise (CW) |
| Shaft Size | 5/8" |
| Port Size | 3/4" FNPT |
| Maximum Flow Rate | 9.4 GPM |
| Maximum Pressure | 150 PSI |
| Maximum Speed | 2,600 RPM |
| Drive Type | PTO / Gas Engine (with adapter) |
| Compatible Repair Kit | R440RK |
| Compatible Couplers | RMC585410, RC5858 |
Performance Chart — Flow Rate (GPM)
| Pressure (PSI) | 1800 RPM | 2200 RPM | 2600 RPM |
| 0 PSI | 6.5 GPM | 8.0 GPM | 9.4 GPM |
| 20 PSI | 5.8 GPM | 7.0 GPM | 8.5 GPM |
| 40 PSI | 5.1 GPM | 6.2 GPM | 8.0 GPM |
| 100 PSI | 4.5 GPM | 5.6 GPM | 7.5 GPM |
| 150 PSI | 4.0 GPM | 5.5 GPM | 7.3 GPM |
Compatible Accessories & Repair Parts
Repair Kit
- R440RK — Universal Repair Kit
Couplers
- RMC585410 — 5/8" Shaft Multi-Speed PTO Coupler
- RC5858 — 5/8" Gas Engine Adapter Coupler
Rotation Prevention
- RMTAC — Torque Bar & Chain Kit
Rebuild Ready — Typical Field Service Procedure
- Remove endplate cap bolts
- Slide endplate off shaft carefully
- Inspect rollers and replace worn components
- Lubricate shaft seal before reassembly
- Reinstall endplate and hardware
Rotation Direction Warning
The R440SS is configured for clockwise (CW) rotation only.
Verify shaft rotation direction before installation. Operating the pump in the incorrect rotation direction may result in poor performance and premature wear.
Compatible Repair Kit
The R440SS uses the following rebuild kit:
- R440RK — Includes max rollers, needle bearing, lip seals, O-ring, and pilly key
Warranty Information
The Remco RollMax R440SS Roller Pump is backed by the manufacturer’s warranty coverage.
For product support, compatibility assistance, or setup questions, contact Spraywell at 561-964-3228.
