Hydraulic Pump Parts for Construction Machinery
Construction machines earn money by the hour. When a main pump loses pressure the machine stops, and the cost of waiting for a part quickly passes the cost of the part itself. Most of what we ship into this sector goes to rebuild shops and plant workshops that need a matched rotary group on the bench this week, not next quarter.

Industry Pain Points
- A main pump fails on site and the machine is on a contract with penalties for downtime
- The original rotary group carries a long lead time for the size needed
- Contaminated oil after a hose failure has taken out the pump and the travel motor together
- Older machines still working hard are no longer supported by the original parts programme
What Customers In This Sector Need
- A matched set rather than parts gathered from three suppliers
- Sizes covering both the main pump and the travel and swing motors
- Clear identification from a photograph of the nameplate
- Stock availability confirmed before the machine is stripped
Products That Fit This Sector

A7VO and A8VO Series Rotary Groups
A7V A7VO and A8VO bent axis rotary groups and spare parts in sizes 28 to 1000 for excavator and heavy mobile main pumps.
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A10VO Series Rotary Groups
A10VO and A10VD rotary groups and spare parts in sizes 16 to 140 for compact excavators skid steers and industrial power units.
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A11VO Series Rotary Groups
A11VO rotary groups and spare parts in sizes 35 to 500 for concrete pumps drill rigs and heavy mobile work functions.
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A4VG Series Rotary Groups
A4VG closed circuit rotary groups and spare parts in sizes 28 to 500 for self propelled machine drive circuits, supplied as matched sets.
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A6VM and A6V Series Rotary Groups
A6VM and A6V variable displacement motor rotary groups and spare parts in sizes 28 to 1000 for travel and drum drives.
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Cylinder Blocks
Cylinder blocks for axial and bent axis piston pumps with sintered bronze running faces bonded and machined after sintering then lapped flat.
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Typical Application Scenarios
- Excavator main pumpTwin A8VO units on machines from ten to fifty tonnes, rebuilt one section at a time or as a pair.
- Travel and swing motorsA6VM and A2FM units where loss of torque on a slope is the first symptom.
- Mini excavator and skid steerA10VO frames from size 16 to 140, the highest volume repair in the sector.
- Attachment and auxiliary circuitsVane pumps and gear driven auxiliary circuits on carriers and tool holders.
How the Solution Runs
- IdentifyPhotograph of the nameplate and the machine model sent on WhatsApp
- ConfirmWe read the code, confirm the frame and check stock the same day
- QuotePrice, lead time and packing confirmed by email
- ShipVacuum sealed set shipped by air or sea with photographs before dispatch
Delivery Capability
Common construction frames ship from stock. Air freight for a machine that is down, sea freight for planned overhauls and stocking orders. Every set is photographed before packing so the shop knows what is in the box.
Related Project Cases
Excavator Travel Motor Rebuild Programme in Turkey
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Read the CaseMarine Winch Pump Refit for a Canadian Repair Yard
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Related Knowledge Articles
Frequently Asked Questions
Can you identify the pump from a photograph?
Do you supply travel motor parts as well as main pump parts?
How fast can a rotary group reach a job site?
Can one section of a twin main pump be rebuilt alone?
Do you warranty parts used on rental machines?
Tell Us the Machine and the Model Code
Tell us the model code stamped on the pump, the quantity and your delivery port. A quotation with lead time usually comes back within one working day.