At 40-75 HP, a gear pump handles a standard Indian tractor's hydraulic demands adequately. Above 80-100 HP, the hydraulic system's demands change — more implements running simultaneously, higher 3-point lift capacity, more sensitive load sensing requirements for draft control, and in combine harvesters, a fully variable hydraulic circuit for header height, reel speed, and variator control.
This is where the Rexroth A10V series becomes relevant. The variable displacement A10VO and A10VG adjust output continuously to match the tractor's multiple simultaneous hydraulic demands — reducing heat, improving fuel efficiency, and delivering precise draft control that a gear pump cannot. PumpGrid refurbishes these pumps to Rexroth's variable-displacement specification — not just static pressure, but dynamic response across the displacement range.
Tractor Horsepower & Hydraulic Pump Type — What You Need to Know
The tractor's engine HP is the clearest indicator of which pump type is fitted:
Standard Indian tractor Gear Pump (fixed) Mahindra, Sonalika, TAFE, Eicher Eaton 4623 / 5421 refurbished
Mid-range tractors Gear Pump (sometimes Piston) New Holland, John Deere 5045D-5055D Eaton or Sauer Danfoss depending on model
Large tractors Variable Piston Pump (Rexroth) John Deere 5075E-5105E, Claas Arion Rexroth A10VO28 / A10VO45 refurbished
Combine harvesters Variable Piston Pump (Rexroth) John Deere S660, Claas Lexion, New Holland CR Rexroth A10VG series refurbished
Available Bosch Rexroth Tractor Pump Models
| Equipment | Rexroth Pump | Pressure | Displacement | Application |
|---|---|---|---|---|
| John Deere 5075E / 5090E | A10VO28 | 280 bar | 28 cc/rev | Large tractor main hydraulics |
| John Deere 5105E / 5115E | A10VO45 | 280 bar | 45 cc/rev | Premium tractor hydraulics |
| Claas Arion 610 / 630 | A10VG28 | 300 bar | 28 cc/rev | European large tractor |
| John Deere S660 Combine | A10VG45 | 300 bar | 45 cc/rev | Combine main hydraulics |
| Claas Lexion 770 Combine | A10VG63 | 300 bar | 63 cc/rev | Large combine harvesters |
| New Holland CR9090 Combine | A10VO71 | 280 bar | 71 cc/rev | Large combine main circuit |
Model not listed? WhatsApp us your machine details — we source across the full Bosch Rexroth range.
Our Bosch Rexroth Quality Standards
Draft Control System Verified
Large tractor Rexroth pumps drive the load-sensing draft control system — which automatically adjusts implement depth to maintain consistent draft force. We test LS (load sensing) response as well as peak pressure to confirm the draft control system will work correctly after refurbishment.
Combine Harvester Expertise
Combine harvester hydraulic systems are among the most complex in agricultural equipment — multiple circuits for header, reel, variator, elevator, and feeder all demanding simultaneous variable flow. We refurbish Rexroth pumps for combines with awareness of this multi-circuit demand profile.
Variable Displacement Test Report
Your test report documents both static pressure (peak performance) and variable displacement response (modulation) — the two things that matter for tractor and combine draft control and header control respectively.
3-Month Warranty
All Rexroth tractor pumps carry a minimum 3-month warranty. For large-HP tractor and combine operators, this covers the post-repair bedding-in period and any initial seal settling issues.
Warning Signs in Your Tractor
Act on these early — delayed replacement risks secondary damage to cylinders, motors, and valves.