Spare Parts & Rotary Group Repair Kits for Bosch Rexroth A28VO Series Hydraulic Piston Pumps (A28VO130)
100% interchangeable rotary group assembly, replacement spare parts, and seal kits for Bosch Rexroth A28VO variable axial piston pumps, in-stock with OEM-grade precision.
- ✓100% Interchangeable
- ✓Durable & High-Wear Resistance
- ✓Large Stock & Fast Shipping
Key Specifications
Item | Details | |
Brand | HYLINK | |
Product Category | Hydraulic Pump Spare Parts / Rotary Group Kits / Overhaul Repair Assemblies / Seal Kits | |
Compatible Brand | Replacement for Bosch Rexroth (A28VO Series) — 100% Interchangeable | |
Available Frame Sizes | A28VO130 | |
Applicable Machines | Heavy construction machinery, excavators, mobile cranes, concrete pumps, and industrial hydraulic power units | |
Minimum Order Quantity | 1 Piece | |
Delivery Time | 1–3 days for in-stock items / 5–8 days for standard orders | |
Price | Inquire for a direct factory quote | |
Warranty | 6 months against manufacturing and material defects | |
Overview
HYLINK supplies precision-engineered Bosch Rexroth A28VO series (A28VO130) swashplate-design axial piston variable displacement pump replacement parts and complete rotary group overhaul kits. Specially engineered for high-performance mobile and industrial open-circuit hydraulic systems, every component is manufactured to exact original dimensions and tolerances to ensure seamless fitment and dependable operational performance.
Product Overview
Bosch Rexroth A28VO series variable axial piston pumps serve as robust power sources across demanding mobile and industrial hydraulic applications. Under continuous high-pressure duty cycles and varying loads, internal rotating components—including the drive shaft, cylinder block, pistons with slipper shoes, ball guide, retainer plate, swashplate, and valve plate—experience ongoing sliding friction and mechanical stress. Surface wear on these critical contact interfaces causes internal fluid bypass leakage, thermal elevation, displacement output loss, and reduced system response.
HYLINK manufactures high-precision replacement rotary groups and individual pump spare parts for the A28VO130 frame size. Produced from premium forged alloy steel and wear-resistant bronze formulations, each part undergoes micron-level CNC machining and 3D CMM quality verification. This allows hydraulic repair facilities and equipment rebuilders to cost-effectively restore original volumetric efficiency without purchasing expensive outer pump housing structures.
Available Components
Below is the standardized component list for Bosch Rexroth A28VO series hydraulic pumps. Individual spare parts and complete rotary group repair kits are both available:
Item No. | Part Name | Qty. |
1 | Splined Shaft | 1 |
2 | Cylinder Block | 1 |
3 | Cylinder Spring | 1 |
4 | Cylinder Gasket | 1 |
5 | Circlip | 1 |
6 | Valve Plate | 1 |
7 | Ball Guide | 1 |
8 | Retainer Plate | 1 |
9 | Piston | 9 |
10 | Piston Slipper | 9 |
11 | Swash Plate | 1 |
12 | Thrust Plate | 1 |
13 | Spherical Hinge Spring | 20 |
14 | Ball Guide Washer | 1 |
15 | Bearing Bush 1 | 1 |
16 | Bearing Bush 2 | 1 |
Quality Assurance & Manufacturing
Every HYLINK pump and replacement part undergoes strict quality control before shipment:
l Dimensional accuracy — checked with high-precision CMM (Coordinate Measuring Machines) to guarantee an exact fit with original pump housings.
l Material metallurgy — manufactured from premium forged steel and high-wear-resistant alloys to prevent premature fatigue.
l 100% performance test — every complete pump assembly is tested on our dynamic hydraulic test rig for pressure, flow rate and efficiency under full working load.
Packing, Shipping & Warranty
l Packaging — anti-rust protective film + heavy-duty foam cushioning + standard export fumigation-free wooden case (reinforced carton for small spare parts).
l Shipping — express courier (DHL / FedEx) for urgent repair orders; sea or air cargo for bulk orders.
l Warranty — 6 months quality assurance against manufacturing and material defects from the delivery date. In the event of a confirmed quality defect, HYLINK provides hassle-free replacement.
FAQ
Q: Are your SBS pump parts interchangeable with genuine Caterpillar parts?
A: Yes. All parts are produced to original specifications and dimensions and are 100% interchangeable — no modification is required during installation.
Q: What is the minimum order quantity?
A: 1 piece. We supply both individual components and complete rotary group / repair kits.
Q: How fast can you ship?
A: In-stock items are dispatched within 1–3 days; standard production orders take 5–8 days. Express and sea/air freight are both available.
Q: How do I confirm the correct part for my machine?
A: Send us your excavator model, pump model (SBS80 / SBS120 / SBS140) and the part name or photo — our technical team will confirm the correct item before you order.
Q: What warranty do you offer?
A: 6 months against manufacturing and material defects, with replacement support for confirmed quality issues.