Bosch Rexroth A8V Series Variable Displacement Dual Pump Parts & Rotary Group (A8V28 to A8V172)
100% interchangeable rotary group & spare parts engineered for Bosch Rexroth A8V variable dual-circuit axial piston pumps, in-stock with OEM-grade quality.
- ✓100% Interchangeable
- ✓Durable & High-Wear Resistance
- ✓Large Stock & Fast Shipping
Key Specifications
Item | Details | |
Brand | HYLINK | |
Product Category | Hydraulic Variable Dual Pump Spare Parts / Rotary Group / Overhaul Repair Kits | |
Compatible Brand | Replacement for Bosch Rexroth (A8V Series) — 100% Interchangeable | |
Available Frame Sizes | A8V28 / A8V55 / A8V59 / A8V80 / A8V86 / A8V107 / A8V115 / A8V172 | |
Applicable Machines | Heavy excavators, track loaders, forestry equipment, rotary drilling rigs, and mobile hydraulic machinery | |
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 A8V series (A8V28, A8V55, A8V59, A8V80, A8V86, A8V107, A8V115, A8V172) bent-axis variable axial piston dual pump replacement parts and complete rotary group overhaul kits. Designed for demanding dual-circuit mobile machinery hydraulic systems, all components strictly conform to original Bosch Rexroth engineering dimensions and tolerances, providing seamless fit and reliable operation.
Product Overview
The Bosch Rexroth A8V series bent-axis variable displacement dual axial piston pumps are key power units in multi-circuit mobile hydraulic applications. Operating under high continuous duty cycles and severe load conditions, internal rotating assemblies—such as the drive shaft, cylinder blocks, pistons with rings, valve plates, synchronization shafts, and center springs—undergo continuous friction and mechanical stress. Over extended operation, surface wear leads to reduced flow output, internal fluid bypass, thermal buildup, and loss of hydraulic efficiency.
HYLINK manufactures high-precision complete replacement rotary groups and individual spare parts across the entire A8V size range from 28 to 172. Built from high-tensile forged alloy steel and wear-resistant bronze compositions, each part undergoes micron-level CNC machining and CMM quality inspection. This enables service engineers and equipment rebuilders to restore factory-level hydraulic pump performance without replacing expensive complete casing assemblies.
Available Components
Below is the standard component list for Bosch Rexroth A8V series hydraulic pumps. Individual spare parts and complete overhaul repair kits are both available:
Item No. | Part Name | Qty. |
1 | Cylinder Block | 1 |
2 | Bearing Plate | 1 |
3 | Center Pin | 1 |
4 | Piston | 7 |
5 | Connecting Rod | 7 |
6 | Retainer Plate | 1 |
7 | Valve Plate | 1 |
8 | Bushing | 1 |
9 | Belleville Spring | 1 |
10 | Spring Seat | 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.