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Sauer 90K055 90m055 90m075 Hydraulic Piston Motor And Piston And Valve Plate For Road Roller

Sauer 90K055 90m055 90m075 Hydraulic Piston Motor And Piston And Valve Plate For Road Roller

The Sauer 90K055, 90M055 and 90M075 hydraulic piston motors are heavy-duty drive units designed for road rollers. Corresponding repair spare parts including pistons and valve plates are available. This series provides stable high torque output for pavement compaction. With hardened internal components, it features low leakage and outstanding wear resistance under continuous vibration and heavy loads. It serves as ideal OEM and replacement hydraulic parts for road roller compaction machinery.
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Product Introduction

Wuhan Xinlaifu Hydraulic Equipment Co., Ltd. is one of the leading manufacturers and suppliers of sauer 90k055 90m055 90m075 hydraulic piston motor and piston and valve plate for road roller in China. With abundant experience, we warmly welcome you to buy high quality customized products at competitive price from our factory. Also, OEM&ODM service is available.

 

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Technical Parameters

 

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Parameter Specification
Product Model Sauer 90K055,90M055,90M075 Hydraulic Piston Motor
Matching Spare Parts Piston, Valve Plate and other internal repair components
Core Feature Heavy-duty high torque output, suited for continuous vibration working conditions
Material & Durability Hardened friction pairs, good wear resistance and low leakage
Application Main drive motor, OEM & replacement spare part for road rollers

Product Overview

 

The Sauer 90K055, 90M055 and 90M075 hydraulic piston motors are heavy-duty drive components specially engineered for road rollers. Matched with complete spare parts including pistons and valve plates, this series delivers high torque and stable power output for compaction operations. Adopting advanced piston structure, it maintains reliable performance under continuous heavy-load and vibrating construction environments.

 

Core Features

 

 

Precise control performance

  • Smooth rotation output: Optimized flow distribution structure reduces torque fluctuation and guarantees even compaction effect.
  • Wide load adaptability: Stable operation under variable load conditions to satisfy different road compaction requirements.
  • Sealing reliability: Premium sealing assemblies prevent oil leakage under long-duration vibration working scenarios.

Efficient and reliable design

  • High efficiency design: Excellent volumetric efficiency lowers energy loss and cuts fuel consumption of road rollers.
  • Thermal balance optimization: Optimized internal flow channels to control temperature rise during continuous compaction work.
  • Impact resistance: Hardened pistons and valve plates enhance wear resistance and extend service life of the whole motor.

 

Application fields

 

Sauer 90K055,90M055,90M075 hydraulic piston motors together with piston and valve plate repair kits are main drive parts for road rollers. They are widely used in highway, municipal road and pavement reconstruction projects. Suitable as OEM and replacement spare parts for roller compaction machinery under harsh site conditions.

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Main Specificaion

 

Technical data for BMR with 25 and 1 in and 1 in splined and 28.56 tapered shaft:
Type BMR
BMRS
36		 BMR
BMRS
50		 BMR
BMRS
80		 BMR
BMRS
100		 BMR
BMRS
125		 BMR
BMRS
160		 BMR
BMRS
200		 BMR
BMRS
250		 BMR
BMRS
315		 BMR
BMRS
375
Geometric displacement (cm3 /rev.) 36 51.7 81.5 102 127.2 157.2 194.5 253.3 317.5 381.4
Max. speed (rpm) cont. 1085 960 750 600 475 378 310 240 190 155
int. 1220 1150 940 750 600 475 385 300 240 190
Max. torque (N·m) cont. 72 100 195 240 300 360 360 390 390 365
int. 83 126 220 280 340 430 440 490 535 495
peak 105 165 270 320 370 460 560 640 650 680
Max. output (kW) cont. 8.5 9.5 12.5 13 12.5 12.5 10 7 6 5
int. 9.8 11.2 15 15 14.5 14 13 9.5 9 8
Max. pressure drop (MPa) cont. 14 14 17.5 17.5 17.5 16.5 13 11 9 7
int. 16.5 17.5 20 20 20 20 17.5 15 13 10
peak 22.5 22.5 22.5 22.5 22.5 22.5 22.5 20 17.5 15
Max. flow (L/min) cont. 40 50 60 60 60 60 60 60 60 60
int. 45 60 75 75 75 75 75 75 75 75
Weight (kg) 6.5 6.7 6.9 7 7.3 7.6 8 8.5 9 9.5

 

Technical data for BMR with 31.75 and 32 shaft:
Type BMR
BMRS
36		 BMR
BMRS
50		 BMR
BMRS
80		 BMR
BMRS
100		 BMR
BMRS
125		 BMR
BMRS
160		 BMR
BMRS
200		 BMR
BMRS
250		 BMR
BMRS
315		 BMR
BMRS
375
Geometric displacement (cm3 /rev.) 36 51.7 81.5 102 127.2 157.2 194.5 253.3 317.5 381.4
Max. speed (rpm) cont. 1250 960 750 600 475 378 310 240 190 155
int. 1520 1150 940 750 600 475 385 300 240 190
Max. torque (N·m) cont. 72 100 195 240 300 380 450 540 550 580
int. 83 126 220 280 340 430 500 610 690 690
peak 105 165 270 320 370 460 560 710 840 830
Max. output (kW) cont. 8.5 9.5 12.5 13 12.5 12.5 11 10 9 7.5
int. 9.8 11.2 15 15 14.5 14 13 12 10 9
Max. pressure drop (MPa) cont. 14 14 17.5 17.5 17.5 17.5 17.5 17.5 13.5 11.5
int. 16.5 17.5 20 20 20 20 20 20 17.5 15
peak 22.5 22.5 22.5 22.5 22.5 22.5 22.5 22.5 21 17.5
Max. flow (L/min) cont. 45 50 60 60 60 60 60 60 60 60
int. 55 60 75 75 75 75 75 75 75 75
Weight (kg)   6.5 6.7 6.9 7 7.3 7.6 8 8.5 9 9.5
* Continuous pressure:Max.value of operating motor continuously.
* Intermittent pressure:Max.value of operating motor in 6 seconds per minute .
* Peak pressure:Max.value of operating motor in 0.6 second per minute.

 

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