Short Description
Premium factory-direct aftermarket Rexroth A7VO Series Bent-Axis Axial Piston Pump Spare Parts and Overhaul Repair Kits, precision-engineered as 100% precision drop-in alternatives to restore original structural efficiency and high-torque performance. Covering full displacement frame sizes from A7VO28 up to A7VO500 (Series 63 & 65), our heavy-duty inventory features hardened tapered pistons, heavy-duty drive shafts, and micro-lapped lens shape valve plates designed to withstand rigorous pressure spikes up to 400 bar in rotary drilling rigs, truck cranes, and concrete pump trucks.
Key Highlights
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100% Precise Bent-Axis Geometry Matching: Fully reverse-engineered to precise Bosch Rexroth original factory angular profiles and micro-metric clearances. Fits seamlessly into existing OEM pump housings with zero structural mismatch or binding of the drive shaft.
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Upgraded Heavy-Duty Tapered Pistons: Our A7VO replacement pistons feature optimal tapered geometries and induction-hardened finishes (60-62 HRC). This robust structural build comfortably eliminates piston-head shearing under sudden heavy pressure variations during piling operations.
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Precision Mated Lens Valve Plates: The curved, lens-shaped valve plates undergo rigorous spherical micro-lapping to achieve absolute flatness. This ensures a perfect hydro-dynamic seal with the cylinder block face, drastically reducing high-pressure internal blow-by and case heating.
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One-Stop Structural Kit Sourcing: Comprehensive component batches ready for rapid global shipping, including Cylinder Blocks (Barrels), Tapered Pistons, Lens Valve Plates, Heavy-Duty Drive Shafts, Center Pins, Control Spools, Thrust Rollers, Positioning Links, and complete high-temperature Viton (FKM) Seal Kits.
HTML Table
| Compatible Bent-Axis Sizes | Available Internal Spare Parts & Components | Core Machinery & System Application Scope |
|---|---|---|
| A7VO28 / A7VO55 / A7VO80 / A7VO107 | Cylinder Block (Barrel), Tapered Pistons, Lens Shape Valve Plate (Left/Right Hand), Drive Shaft with Heavy Bearings, Center Pin, Control Piston, Roller Bearings, Swiveling Cradle Components, Complete Premium Viton (FKM) Reseal Kits. | Nominal Pressure: 350 bar / Peak Intermittent: 400 bar. Dominant power source for Rotary Drilling Rigs (Main Winch/Power Head), Heavy Truck Cranes (Hoisting Systems), Concrete Boom Pumps, Piling Rigs, and Heavy Excavator Travel Drives. |
| A7VO160 / A7VO250 / A7VO355 / A7VO500 |
FAQ
Q1: Bent-axis pumps are highly sensitive to rotation. Do your A7VO repair parts support both Clockwise (R) and Counter-Clockwise (L) models? A: Yes, absolutely. Components such as the Lens Valve Plate are asymmetric and specifically machined for Right-Hand (CW) or Left-Hand (CCW) fluid orientation. To ensure perfect volumetric delivery, please provide the full designation code from your nameplate (e.g., A7VO107LRD/63R-NZB01) when submitting your inquiry.
Q2: Rotary drilling rigs create immense vibrations that shock the pump internals. How do your A7VO parts prevent piston failure? A: Piling and drilling operations subject the A7VO pump to aggressive load reversals. To counter this, our tapered pistons are forged from premium structural alloy steel, paired with precisely calibrated spherical joint clearances. The internal linkage pins and cylinder faces undergo hard-nitriding to maximize tensile strength, preventing metal fatigue and structural fracture under the worst 400 bar impact loads.
