Spare parts ► Hydraulic parts ► Hydraulic parts

 Ball guide Caterpillar 173-3427 Handok
In Stock
Model: 8357
Sku: 173-3427
Brand: HANDOK
Spare part for Caterpillar:  Ball guide Caterpillar 173-3427 Handok Video..
54.70 $
 Seal YBS AP2085A
In Stock
Model: 5008
Sku: AP2085A-YBS
Brand: YBS
SEAL YBS AP2085A 03505511..
11.50 $
1nd Reduction Assembly JCB 332/D1962 Spinparts SP-R1962
In Stock
Model: 11243
Sku: SP-R1962
Brand: SPINPARTS
Spare part: 1nd Reduction Assembly JCB JS330 JS360 JS370 332/D1962 05/903844 336/C7662 Spinparts SP-..
632.86 $
1st Reduction Assembly JCB 05/903825 Spinparts SP-R3825
In Stock
Model: 5460
Sku: SP-R3825
Brand: SPINPARTS
1st Reduction Assembly JCB 05/903825 Spinparts SP-R3825 Cross-Numbers: JCB 05/903825 Use in: J..
416.03 $
2nd Reduction Assembly JCB 05/903823 Spinparts SP-R3823
In Stock
Model: 6359
Sku: SP-R3823
Brand: SPINPARTS
2nd Reduction Assembly JCB JS110 JS115 JS130 JS160 JS180 JS190 05/903823 550/43210 Spinparts SP-R382..
134.08 $
2nd Reduction Assembly JCB 05/903836 Spinparts SP-R3836
In Stock
Model: 5462
Sku: SP-R3836
Brand: SPINPARTS
2nd Reduction Assembly  JCB JS110-180 ZJ140 Spinparts SP-R3836 (JCB 05/903836)  Cr..
461.67 $
2nd Reduction Assembly JCB 332/D1963 Spinparts SP-R1963
In Stock
Model: 11244
Sku: SP-R1963
Brand: SPINPARTS
Spare part: 2nd Reduction Assembly JCB JS330 JS360 JS370 332/D1963 05/903845 336/C7663 Spinparts SP-..
833.85 $
2nd Sun Gear JCB 05/9038260 Spinparts SP-R3826
In Stock
Model: 5461
Sku: SP-R3826
Brand: SPINPARTS
2nd Sun Gear JCB JS110-180 ZJ140 Spinparts SP-R3826 Cross - JCB 05/903826 550/43213..
81.77 $
Adjusting Screw Rod Rexroth A10VSO28 SKS
In Stock
Model: 12089
Sku: 12089
Brand: SKS Hydraulic
Spare part for Bosch Rexroth hydraulics: Adjusting Screw Rod Rexroth A10VSO28 SKS..
13.20 $
Adjusting Screw Rod Rexroth A10VSO45 SKS
In Stock
Model: 12106
Sku: 12106
Brand: SKS Hydraulic
Spare part for Bosch Rexroth hydraulics: Adjusting Screw Rod Rexroth A10VSO45 SKS..
4.70 $
Ball Bearing Volvo SA7117-30110 Spinparts SP-R0110
In Stock
Model: 11302
Sku: SP-R0110
Brand: SPINPARTS
Spare Part Volvo Gearbox: Ball bearing Volvo EC140~EC210 SA7117-30110 Spinparts SP-R0110..
162.20 $
Ball Bearing Volvo VOE14538940 Spinparts SP-R8940
In Stock
Model: 11309
Sku: SP-R8940
Brand: SPINPARTS
Spare Part Volvo Gearbox: Ball bearing Volvo EC210~240 VOE14538940 Spinparts SP-R8940..
243.60 $
Ball guide Bobcat 331 SKS
In Stock
Model: 11753
Sku: 11753
Brand: SKS Hydraulic
Spare part for Bobcat hydraulics: Ball guide (spherical) Bobcat 331 SKS Use in:..
42.60 $
Ball guide Bobcat D=36.0 mm
In Stock
Model: 15505
Brand: SKS Hydraulic
Spare part for Bobcat hydraulics: Ball guide D=36.0 mm SKS Cross-numbers: ..
52.00 $
Ball guide Bosch Rexroth D=36.0 mm
In Stock
Model: 5845
Sku: A10V28BGS
Brand: HANDOK
Spare part for Bosch Rexroth hydraulics: Ball guide A10V28 Handok..
21.20 $
Spare parts ► Hydraulic parts ► 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.

Used in: Hitachi ZX330, JCB JS220, JCB JS330, Hitachi ZX200, Hitachi ZX240, JCB JS160, JCB JS200, JCB JS130, Hitachi ZX270, Hitachi ZX120, JCB JS260, JCB JS240, Hitachi ZX350, Hitachi ZX280, Hitachi ZX160, Hitachi ZX110, Hitachi ZX450, Hitachi ZX130, Hitachi ZX140W, Hitachi ZX400, Hitachi ZX500, JCB JS180, Hitachi ZX145W, Hitachi ZX370, Hitachi ZX135, JCB JS145, JCB JS190, JCB JS115, Hitachi ZX125, Doosan 255LC, Komatsu PC120, Caterpillar 330D