The drum drive pump is the heart of a mixer truck's hydraulics — a variable-displacement closed-circuit axial piston pump, PTO-driven off the truck's transmission, that lets the drum spin continuously in either direction regardless of whether the truck is moving. Bosch Rexroth's A4VG series dominates this application. A separate, smaller pump — often an Eaton unit — drives the discharge chute's swing function on trucks so equipped.

Two Pumps, Two Jobs on Your Mixer Truck

FunctionTypical PumpSymptom If Failing

Drum RotationBosch Rexroth A4VG closed-circuitDrum slow, weak, or stops turning

Discharge Chute SwingEaton chute pump (where fitted)Chute won't swing or position correctly

Stabiliser Legs (some trucks)Shared or auxiliary circuitSlow or uneven leg deployment

WhatsApp your truck's make, model and symptom — we'll confirm which pump before you order.

Available Brands

All pumps are quality-tested and dispatched with a written quality report and 3-month warranty.

Bosch Rexroth

A4VG series — primary drum drive pump

View All Bosch Rexroth Pumps

Eaton

Chute pump and auxiliary functions

View All Eaton Pumps

Parker

Value alternative for drum drive circuit

View All Parker Pumps

Dedicated brand-model pages for mixer trucks are being added. WhatsApp us your truck's model and we'll confirm the exact match from stock.

What Our A4VG Quality Process Covers

Piston & Slipper Assembly

Measured against Rexroth tolerance — the closed-circuit design's efficiency depends on tight clearance here.

Integral Charge Pump

Inspected and rebuilt — supplies replenishing oil to the closed loop, critical for continuous drum rotation.

Swashplate Control

Tested for smooth forward/reverse response — this controls both drum direction and mixing/agitating speed.

Shaft Seal & All O-rings

Replaced as standard on every unit.

Closed-Loop Bench Test

Charge pressure and output verified before the pump ships, documented on the test report.

Why Choose a Mixer Truck Pump?

Competitive Pricing

A new A4VG unit through the mixer truck OEM channel carries a real premium. Quality Process gets you the same tested output at significantly lower cost.

A Stopped Drum Means a Wasted Load

If the drum stops turning, the concrete on board can start to set — a total loss. We prioritise fast dispatch on mixer truck pumps to avoid this scenario recurring.

Fleet Pricing for RMC Operators

Ready-mix concrete operators running multiple trucks get volume pricing and stock reservation on repeat orders.

Warranted & Documented

Minimum 3-month warranty. Written test report with actual pressure and output readings included with every order.

Mixer Truck Pump Warning Signs

Drum rotation slower or weaker than usual

Whining noise from the pump when PTO engages

Hydraulic oil overheating on long hauls

Oil leak near the PTO/pump coupling

Drum reverses slower than it turns forward (or vice versa)

Discharge chute slow or unresponsive

If 2 or more of the above apply, WhatsApp us your truck model and symptoms for a quick assessment.

Concrete Mixer Truck Pump Supply — Cities We Cover

Delhi NCR Mumbai Pune Ahmedabad Bangalore Hyderabad Chennai

Frequently Asked Questions

My mixer truck's drum turns but is slower than before — is that the A4VG pump?

Very likely, especially if the slowdown is gradual — worn pistons and slippers reduce volumetric efficiency over time. WhatsApp your truck model and we'll confirm before you order.

Is the drum drive pump the same as the truck's main hydraulic pump for tipping (if fitted)?

No — most mixer trucks with a separate tipping or auxiliary function run that off a different PTO circuit. The A4VG is dedicated specifically to drum rotation. Confirm your truck's exact configuration with us before ordering.

How long does a A4VG mixer pump last?

With clean hydraulic oil and regular filter changes, typically 4,000-6,000 operating hours — around 2-3 years of regular RMC delivery duty.

Can you supply for an RMC fleet with regular replacements?

Yes. We work with ready-mix concrete operators managing multiple trucks who need recurring pump replacements — stock reservation and invoice billing available for repeat accounts.

Pumps for Other Heavy Vehicles

Tipper/Dumper Pump Commercial Truck Pump Road Roller Pump Crane Pump

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Concrete Mixer Truck Hydraulic Pumps