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Hydraulic parts

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Ball Guide Washer Vickers 404932 SKS
Model: 13236
In stock
Brand:: SKS Hydraulic
Spare part: Ball Guide Washer Vickers 404932 SKS Part number: 404932 Cross-Number: Use in: Please ma..
2.10 $ excl. VAT 2.10 $
Hydraulic parts other: Hydraulic parts other
Ball Guide Washer Vickers PVB20, PVB29 SKS
Model: 14742
In stock
Brand:: SKS Hydraulic
Spare part: Ball Guide Washer Vickers PVB20, PVB29 SKS Part number: Cross-Number: Use in: Vickers PV..
2.10 $ excl. VAT 2.10 $
Hydraulic parts other: Hydraulic parts other
Ball of center Pin Hitachi 4184779 HANDOK
Model: 2819
In stock
Brand:: HANDOK
Spare part: Ball of center Pin Hitachi 4184779 HANDOK Part number: 4184779 Cross-Number: ..
2.55 $ excl. VAT 2.55 $
Pins and Retainers for Hydraulic Pumps and Motors: Pins and Retainers for Hydraulic Pumps and Motors
Ball of center Pin Sauer-Danfoss 51V060 SKS
Model: 16254
In stock
Brand:: SKS Hydraulic
Spare part: Ball of center Pin Sauer-Danfoss 51V060 SKS Part number: Cross-Number: Use in: Sauer-Dan..
11.44 $ excl. VAT 11.44 $
Pins and Retainers for Hydraulic Pumps and Motors: Pins and Retainers for Hydraulic Pumps and Motors
Ball Spring Holder Bosch Rexroth R909062900  SKS
Model: 13960
In stock
Brand:: SKS Hydraulic
Spare part: Ball Spring Holder Bosch Rexroth R909062900 SKS Part number: R909062900 Cross-Number: ..
8.79 $ excl. VAT 8.79 $
Pins and Retainers for Hydraulic Pumps and Motors: Pins and Retainers for Hydraulic Pumps and Motors
Ball Spring Holder Uchida AP2D36 SKS
Model: 10799
In stock
Brand:: SKS Hydraulic
Spare part: Ball Spring Holder Uchida AP2D36 SKS Part number: Cross-Number: Use in: Uchida AP2D36 Us..
36.58 $ excl. VAT 36.58 $
Pins and Retainers for Hydraulic Pumps and Motors: Pins and Retainers for Hydraulic Pumps and Motors
Bearing 4T-32213 NTN AFM
Model: 11459
In stock
Brand:: AFTERMARKET
Spare part: Bearing 4T-32213 NTN AFM Part number: 4T-32213 Cross-Number: Use in: Please make sure th..
62.00 $ excl. VAT 62.00 $
Oil seals, bearings, gears of hydraulic pumps and motors: Oil seals, bearings, gears of hydraulic pumps and motors
Bearing Bosch Rexroth 4T-T7FC070EWPX2 NTN
Model: 17936
In stock
Brand:: NTN
Spare part: Bearing Bosch Rexroth 4T-T7FC070EWPX2 NTN Part number: 4T-T7FC070EWPX2 Cross-Num..
165.00 $ excl. VAT 165.00 $
Oil seals, bearings, gears of hydraulic pumps and motors: Oil seals, bearings, gears of hydraulic pumps and motors
Bearing Bosch Rexroth 543-3713 SKS
Model: 17030
In stock
Brand:: SKS Hydraulic
Spare part: Bearing Bosch Rexroth 543-3713 SKS Part number: 543-3713 Cross-Number: 543-3713 ..
44.77 $ excl. VAT 44.77 $
Oil seals, bearings, gears of hydraulic pumps and motors: Oil seals, bearings, gears of hydraulic pumps and motors
Bearing Bosch Rexroth R909085479 SKS
Model: 15184
In stock
Brand:: SKS Hydraulic
Spare part: Bearing Bosch Rexroth R909085479 SKS Part number: R909085479 Cross-Number: Use in: Pleas..
32.56 $ excl. VAT 32.56 $
Oil seals, bearings, gears of hydraulic pumps and motors: Oil seals, bearings, gears of hydraulic pumps and motors
Bearing Bosch Rexroth R909151102 SKS
Model: 13050
In stock
Brand:: SKS Hydraulic
Spare part: Bearing Bosch Rexroth R909151102 SKS Part number: R909151102 Cross-Number: R909151102 Us..
25.35 $ excl. VAT 25.35 $
Oil seals, bearings, gears of hydraulic pumps and motors: Oil seals, bearings, gears of hydraulic pumps and motors
Bearing Bosch Rexroth R909152775 SKS
Model: 9487
In stock
Brand:: SKS Hydraulic
Spare part: Bearing Bosch Rexroth R909152775 SKS Part number: R909152775 Cross-Number: Use in: Pleas..
48.58 $ excl. VAT 48.58 $
Oil seals, bearings, gears of hydraulic pumps and motors: Oil seals, bearings, gears of hydraulic pumps and motors
Bearing Bosch Rexroth R909153104 SKS
Model: 11062
In stock
Brand:: SKS Hydraulic
Spare part: Bearing Bosch Rexroth R909153104 SKS Part number: R909153104 Cross-Number: Use in: Pleas..
67.73 $ excl. VAT 67.73 $
Oil seals, bearings, gears of hydraulic pumps and motors: Oil seals, bearings, gears of hydraulic pumps and motors
Bearing Bosch Rexroth R909154399 SKS
Model: 13147
In stock
Brand:: SKS Hydraulic
Spare part: Bearing Bosch Rexroth R909154399 SKS Part number: R909154399 Cross-Number: Use in: Pleas..
38.40 $ excl. VAT 38.40 $
Oil seals, bearings, gears of hydraulic pumps and motors: Oil seals, bearings, gears of hydraulic pumps and motors
Bearing Bosch Rexroth R909156249 reinforced SKS
Model: 9631
In stock
Brand:: SKS Hydraulic
Spare part: Bearing Bosch Rexroth R909156249 reinforced SKS Part number: R909156249 Cross-Number: Us..
49.50 $ excl. VAT 49.50 $
Oil seals, bearings, gears of hydraulic pumps and motors: Oil seals, bearings, gears of hydraulic pumps and motors

Hydraulic parts

Spare parts for hydraulic pumps and motors

To maintain a fleet of hydraulic road construction equipment, you need to maintain the hydraulic system in a timely manner and periodically purchase spare parts for hydraulic pumps/hydraulic motors. Both units are similar in appearance, but their principle of operation is fundamentally different. A hydraulic pump converts mechanical energy into hydraulic energy, and a hydraulic motor, on the contrary, converts the kinetic energy of the hydraulic flow into mechanical energy, for example, to operate the actuators of machinery (bucket, hammer, crane, shovel, etc.).

Despite their long service life, hydraulic motors and hydraulic pumps require scheduled and routine maintenance over time. The service life of hydraulic equipment is reduced due to inadequate lubrication and the ingress of solid particles into the system. If uncharacteristic sounds and vibrations of hydraulic components are observed during the operation of the equipment, it is necessary to diagnose the equipment, based on which to determine which spare parts are needed for repair.

The most common breakdowns of hydraulic motors

The main causes of hydraulic motor malfunctions and methods of their elimination:

  1. The drive mechanism is malfunctioning. The cause of the breakdown may be wear or failure of the elements of the distribution unit, piston group, seals, shafts. During the repair work, the hydraulic motor is disassembled into components to measure the amount of wear, seals and piston group components are replaced.
  2. The shaft does not rotate or does not rotate evenly. The breakdown can occur due to "air" in the hydraulic system, mismatch of inlet pressure parameters, poor connection of the shaft and the actuator of the special equipment. The problem is solved by bleeding the air from the system, adjusting the pressure parameters in the hydraulic valve, eliminating shaft runout and jamming.
  3.     Overheating of the hydraulic motor. The probable cause may be improper operation or failure of cooling, the use of hydraulic fluid with a lower viscosity index, destruction or mechanical wear of component parts. The problem can be solved by restoring the cooling system to full operation, replacing the fluid, wearing components, or installing a new engine.
  4. Oil leakage. Lubricant leaks are observed due to loosening (insufficient tightening) of fasteners, wear of the cuff or shaft journal, and housing defects. To eliminate the leakage, we replace seals and seals, tighten fasteners, and restore metal surfaces.
The most common breakdowns of hydraulic pumps


The main causes of hydraulic pump breakdowns and how to fix them:

  1.     Unstable operation of the unit. It can be caused by wear of the seat or cradle, pistons, increased thrust gap of the control unit, contamination of the channel connecting the spool and the pump piston. It is necessary to disassemble the pump and determine the causes of its poor performance.
  2.     Reduced performance of the unit. Possible causes may include: wear of cylinders, drive shaft splines, bearings, piston bores, wear or damage to piston shoes. The worn part is rejected and then replaced.
  3.     Vibrations at low pressure. They can occur if the compensator pressure is incorrectly adjusted, the spool is broken, or the compensator circuit is malfunctioning. The issue is resolved by replacing worn parts and adjusting the hydraulic circuit.
  4.     Pump overheating. The possible cause of overheating of the unit may be a worn piston support, cylinder block, oil leakage through the safety valve. The problem is eliminated by replacing worn parts.
  5.     A characteristic noise. The breakdown may occur when the rotor group parts (bearings, pistons, cradle, cylinder block) are worn out, when a high viscosity index lubricant is filled, or when the shaft is not rotating properly. The problem is solved by replacing worn parts, replacing the hydraulic fluid with a less viscous one, and adjusting the shaft rotation.


After diagnosing and determining the list of replacement parts, you have 2 ways:

  •     Buy spare parts in our store and repair the hydraulic pump/hydraulic motor yourself.
  •     Use the repair service with full restoration of the unit to factory parameters by our hydraulic specialists.


The largest catalog of spare parts for hydraulic motors and hydraulic pumps in Ukraine

The Aspect Plus online store offers spare parts and components for construction, quarrying and road equipment of the following brands: JCB, HITACHI, CASE, Kobelco, CATERPILLAR, Komatsu, Doosan, Hyundai, Volvo, Hidromek, Liebherr and many others.

Our catalog contains spare parts for the most worn hydraulic motors and hydraulic pumps.

  •     From companies that manufacture hydraulic motors and hydraulic pumps (KAYABA, Hitachi, Doosan, Caterpillar, LINDE, Toshiba, Bosch Rexroth, Kawasaki, JEIL, Komatsu, Nabtesco, Sauer-Danfoss, Uchida, Poclain, Nachi, Eaton Vickers).
  •     From companies that manufacture licensed spare parts: Handok Hydraulic (South Korea), SKS (China), Spinparts (China).


You can quickly buy spare parts for hydraulics from us at dealer prices, because Aspect Plus maintains constant stocks and offers favorable terms of cooperation. We send spare parts in Ukraine and abroad, accept various types of payment, repair hydraulic units and advise on technical issues.