Sealey 170mm Rotary Variable Speed Sander/Polisher MS900PS Parts Information
Comprehensive parts breakdown and technical identification for the Sealey 170mm Rotary Variable Speed Sander/Polisher (Model No: MS900PS).
Table of contents
Product Overview
The Sealey MS900PS is a 170mm Rotary Variable Speed Sander/Polisher designed for professional and DIY automotive or surface finishing tasks. It features a powerful 1300W motor operating at 230V, providing the necessary torque and speed control for effective sanding and polishing applications.

Technical Specifications
The unit is engineered for durability and performance, incorporating high-quality internal components such as precision bearings (6002-2RS, 6201-2RS, 608ZZ), a robust armature, and a stator assembly. The variable speed control allows users to adjust the tool's output to match specific material requirements, ensuring optimal results without damaging the surface.
Safety and Maintenance
Important: All maintenance and repair work, particularly the fitting of spare parts, must be performed by a competent person to ensure the tool remains safe for operation. The device includes a safety button on the main switch to prevent accidental activation. Regular inspection of the carbon brushes (item 46) and the mains cable (item 39) is recommended to maintain electrical safety and motor performance. If the tool shows signs of irregular operation, it should be disconnected from the power supply immediately.
Operation and Components
The tool is supplied with a side handle for improved control and stability during operation. The spindle (item 1) is compatible with the provided 170mm rubber backing pad and polishing accessories. The assembly includes a gear housing cover and a cooling system (guide wind circle) to prevent overheating during extended use. Users should ensure that the polishing disc and woolen fabric cover are securely attached before starting the machine.
Warranty and Support
The product is covered by a 12-month guarantee from the date of purchase. A valid proof of purchase is required for any warranty claims. Sealey reserves the right to alter specifications and component parts without prior notice as part of their policy of continuous product improvement.
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Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.