Rexroth A4VSO355LR2G Hydraulic Pump 355cc 315 Bar High Pressure

Price Negotiable

Price: 2

MOQ: 1

Delivery Time: 2 weeks

Brand: Rexroth

Product Description

A4VSO Series Variable High-Pressure Piston Pump

Models: A4VSO355LR2G/22R-VPB13N00, A4VSO355LR2G/22R-PPB13N00, A4VSO355EO2/22R-PZB13N00, A4VSO250LR2/22R-VPB13N00, A4VSO250LR2/22R-VZB13N00

German Rexroth hydraulic pump designed for high-pressure applications with variable displacement.

Contact: whatsapp +85267220981 | email yli97584@gmail.com

Brand Name	Rexroth
Place of Origin	Fujian, China
Warranty	12 Months
Video outgoing-inspection	Provided
Machinery Test Report	Provided
Application	Machinery Repair Shops
Material	Iron
Condition	Original
Quality	100% Tested Great Performance
Certification	ISO
Feature	Long Life, Low Noise
Function	Filter Diesel Oil
Power	Hydraulic Power
Payment Term	T/T 100%

Frequently Asked Questions

Installation

The pump can be installed in various orientations (horizontal or vertical). For vertical installation with the shaft pointing upwards, external bearing flushing is strongly recommended to ensure adequate lubrication for the front bearing and shaft seal.

Operation & Fluid Management

Q5: What hydraulic oil should I use, and what is the optimal viscosity?

Oil Types: Recommended fluids include mineral oils (RC 90220), environmentally friendly fluids (RC 90221), and HF fluids (HFA, HFB, HFC - check seal compatibility, typically FKM for HFD; RC 90223). Specify the fluid type when ordering.
Viscosity Range: The optimal operating viscosity range (at operating temperature) is 16 to 36 mm²/s. Absolute limits are:
- Minimum: 10 mm²/s (short-term, max. case drain temp 90°C)
- Maximum: 1000 mm²/s (short-term, cold start).
Selection: Select a viscosity grade (e.g., VG 46, VG 68) so that the viscosity at the operating temperature (typically tank temperature in open circuits) falls within the optimal range. Generally, opting for a higher viscosity grade is advised.

Q6: What are the fluid cleanliness requirements?

To ensure reliable operation and long service life, the oil cleanliness should be at least NAS 1638 Class 9 or ISO/DIS 4406 18/15.

Q7: Why does my pump get overheated?

Common causes for excessive heating include:

Internal Leakage: Excessive internal leakage within the pump components converts hydraulic energy to heat.
Mechanical Friction: Dry or semi-dry friction due to worn parts or inadequate lubrication generates heat.
Fluid Friction: Inadequate tank capacity or cooling, causing the system to overheat.
Clogged Return Line Filter: A blocked return filter creates high backpressure, leading to increased temperature.
Low Oil Level: Insufficient oil in the reservoir reduces cooling capacity.