33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
Product Overview
This high-performance repair seal kit is custom-engineered for Inner Five-Star Motor 750/280 low-speed high-torque radial piston hydraulic motors, designed for displacement models of 750cc and 280cc. The kit includes complete shaft seals, O-rings, gaskets, backup rings, wear rings and critical sealing components, enabling full motor overhaul and routine maintenance.
Constructed with imported premium NBR nitrile rubber and FKM fluororubber as core materials, the seal set delivers exceptional oil resistance, high-pressure resistance, wear resistance and aging resistance. It serves as a perfect direct replacement for original Inner Five-Star Motor seals, effectively resolving common issues such as external oil leakage, internal leakage and pressure drop. It extends the service life of 750/280 motors under prolonged heavy-load, high-pressure and vibration-intensive operating conditions.
Product Specifications
Item |
Detailed Parameter |
Product Name |
Inner Five-Star Motor 750/280 Hydraulic Motor Seal Kit |
Applicable Model |
750/280 (Displacement: 280cc/rev, 750cc/rev) |
Compatible Series |
Inner Five-Star (AKS Series) Compact Radial Piston Motor |
Main Material |
Imported NBR / FKM Fluororubber + Reinforced Backup Ring + PTFE Wear Ring |
Max Working Pressure |
40MPa (400bar) (Peak); 35MPa (350bar) (Rated) |
Working Temperature |
-30°C ~ 120°C (NBR: -30°C to 100°C; FKM: -20°C to 120°C) |
Kit Contents |
Shaft seal, O-rings, gaskets, backup rings, wear rings, valve plate seals, full overhaul sealing parts |
Cross Reference OEM No. |
(To be filled with actual OEM numbers) |
Net Weight |
Approximately 1.2kg |
Applicable System |
Low-speed high-torque hydraulic drive system, wheel drive & tool drive system |
Warranty |
12 Months |
Key Selling Points
1. 100% Exact OEM Replacement.Fully compatible with original Inner Five-Star Motor 750/280 hydraulic motors, precisely matching standard OEM part numbers. No cutting or modification required, supporting quick direct installation for regular overhaul and emergency repair.
2. Premium Imported Sealing Material.Core sealing components adopt high-performance FKM fluororubber, reinforced backup rings and PTFE wear rings. The materials resist hydraulic oil corrosion, high temperature and fatigue, maintaining stable sealing performance within the temperature range of -30°C to 120°C.
3. High Pressure & Vibration Resistance.All components undergo strict 40MPa high-pressure and vibration simulation tests. It thoroughly eliminates internal and external leakage, stabilizes hydraulic pressure, and ensures consistent torque and power output of the motor in harsh environments.
4. Complete All-in-One Repair Kit.Comes with all sealing accessories needed for full motor maintenance, including dedicated seals for valve plate and bearing assembly. The integrated package simplifies parts management, shortens repair time and reduces overall equipment operation and maintenance costs.
5. Strict Factory Quality Control.Each seal kit passes air tightness, high pressure and aging tests before delivery. All products comply with original factory standards, ensuring reliable long-term operation for industrial and construction machinery.
6. Wide Application Scope.Suitable for Inner Five-Star Motor 750/280 hydraulic motors equipped on various heavy-duty and engineering equipment:
Welcome to HOVOO, a Chinese seal factory. Production of PU, Rubber and PTFE seals. The seals include O-ring, piston seal, rod seal, Gray ring and gas seal.
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