1. Introducció i presentació del producteview
This manual provides comprehensive instructions for the safe and effective operation, maintenance, and troubleshooting of your Sealey SMS255 Double Sliding Compound Mitre Saw 250mm. Please read this manual thoroughly before initial use and retain it for future reference.
The Sealey SMS255 is a powerful 1800W compound mitre saw designed for precise cutting of wood and other specified materials. It features double slides for enhanced control, a 60-tooth TCT blade, and integrated work piece supports. For improved accuracy, the unit is equipped with an LED work light and a laser guide.

Figura 1.1: Mésview of the Sealey SMS255 Double Sliding Compound Mitre Saw.
This image displays the complete Sealey SMS255 Double Sliding Compound Mitre Saw from a front-left perspective, showcasing its main components including the motor housing, blade guard, cutting table, and sliding rails.
2. Informació de seguretat
Always prioritize safety when operating power tools. Failure to follow these instructions may result in serious injury or damage to the tool.
- Llegeix el manual: Enteneu totes les instruccions i advertències abans de l'operació.
- Equips de protecció individual (EPI): Porteu sempre ulleres de seguretat, protecció auditiva i una màscara antipols.
- Àrea de treball: Keep the work area clean, well-lit, and free from obstructions. Ensure adequate ventilation.
- Seguretat elèctrica: Ensure the power supply matches the tool's requirements (230V). Do not operate in damp o condicions humides.
- Seguretat de la fulla: Ensure the blade is correctly installed and sharp. Never attempt to remove jammed material while the saw is running.
- Peça de treball segura: Sempre clamp the workpiece firmly before cutting to prevent movement.
- Mantenir el control: Keep hands clear of the blade path. Use both hands to operate the saw when possible.
- Desendolleu-lo quan no estigui en ús: Desconnecteu la serra de la xarxa elèctrica abans de fer ajustos, canviar les fulles o realitzar tasques de manteniment.
3. Components i muntatge
The Sealey SMS255 comes with essential components for immediate use and convenience.
Components inclosos:
- Peça Clamp
- Dust Extraction Bag
- Nansa de transport
- 60-tooth TCT Blade (pre-installed)
Configuració inicial:
- Desembalatge: Carefully remove the saw and all components from the packaging. Inspect for any shipping damage.
- Posicionament: Place the saw on a stable, level workbench or stand. Ensure sufficient space for workpiece movement and safe operation.
- Attach Workpiece Clamp: Fixeu la peça clamp to the saw table as shown in Figure 3.1. This clamp is crucial for holding material securely during cuts.
- Instal·leu la bossa de pols: Connect the dust extraction bag to the dust port. For optimal dust collection, consider connecting to an external dust extraction system.
- Connexió d'alimentació: Connecteu la serra a una presa de corrent adequada de 230 V.

Figure 3.1: Workpiece clamp en ús.
This image shows a close-up of the workpiece clamp holding a piece of wood firmly against the saw's fence, demonstrating its function in securing material for accurate and safe cutting.
4. Instruccions de funcionament
Seguiu aquests passos per a un funcionament segur i eficaç de la vostra serra de tall biaixat.
- Preparació del material: Ensure the workpiece is free of nails, screws, or other foreign objects that could damage the blade.
- Adjusting Mitre Angle: Loosen the mitre lock handle and pivot the turntable to the desired angle. The saw features locking increments at 0°, 15°, 22.5°, 30°, and 45° Left & Right. Securely tighten the handle.
- Ajust de l'angle del bisell: For bevel cuts, adjust the saw head tilt to the desired angle (up to 45°). Lock the bevel adjustment securely.
- Positioning Workpiece: Place the workpiece firmly against the fence and secure it with the workpiece clamp. Ensure the cutting line aligns with the laser guide.
- Activating Laser and LED: The integrated laser guide and LED work light can be activated to assist with precise alignment and illumination of the cutting area.
- Fent un tall:
- Hold the saw handle firmly.
- Premeu el gallet per engegar el motor i deixar que la fulla arribi a la màxima velocitat.
- Slowly lower the saw head through the workpiece, applying steady, even pressure.
- For wider materials, utilize the double sliding feature by pulling the saw head forward, lowering the blade, and pushing it back through the material. The slides can be locked at different lengths for greater control.
- Un cop finalitzat el tall, deixeu anar el gallet i deixeu que la fulla s'aturi completament abans d'aixecar el capçal de la serra.

Figure 4.1: Saw in operation, cutting wood.
This image captures the Sealey SMS255 mitre saw in action, with the blade descending through a wooden workpiece, illustrating the cutting process.
5. Manteniment
Un manteniment regular garanteix la longevitat i el rendiment òptim de la serra.
- Desconnecteu l'alimentació: Always unplug the saw before performing any maintenance or cleaning.
- Neteja: After each use, clean dust and debris from the saw, especially around the blade guard, motor vents, and sliding rails. Use a brush or compressed air.
- Extracció de pols: Regularly empty the dust extraction bag. If using an external system, ensure its filters are clean and connections are secure.
- Inspecció de la fulla: Periodically inspect the blade for sharpness, damage, or missing teeth. A dull blade can cause kickback and poor cut quality.
- Substitució de la fulla: When replacing the blade, ensure the new blade is compatible (250 x 3.2 x Ø30mm) and installed with the correct rotation direction. Model No. SMS255B multipurpose blade is available for mild steel, aluminium, and wood with nails.
- Lubricació: Keep the sliding rails clean and lightly lubricated to ensure smooth operation.

Figure 5.1: Dust extraction port.
Aquesta imatge ofereix un primer pla view of the dust extraction port on the Sealey SMS255, highlighting the connection point for the dust bag or an external dust collection system.
6. Solució De Problemes
Aquesta secció tracta problemes comuns que podeu trobar amb la vostra serra de tall biaixat.
| Problema | Causa possible | Solució |
|---|---|---|
| La serra no arrenca. | No power supply; faulty switch; motor overload. | Check power connection and circuit breaker. Ensure switch is fully depressed. Allow motor to cool if overheated. |
| Poor cut quality (rough, splintering). | Dull or incorrect blade; workpiece not secured; incorrect cutting technique. | Replace blade if dull or damaged. Ensure workpiece is clamped firmly. Use steady, even pressure and allow blade to reach full speed. |
| Pols excessiu. | Bossa de pols plena o mal fixada; port de pols obstruït. | Empty dust bag. Check and clear any blockages in the dust port. Ensure dust bag is securely attached. |
| Blade binds or stalls. | Workpiece not supported; dull blade; forcing the cut. | Ensure workpiece is fully supported. Replace dull blade. Do not force the saw; let the blade do the work. |
7. Especificacions
Detailed technical specifications for the Sealey SMS255 Double Sliding Compound Mitre Saw.
| Especificació | Valor |
|---|---|
| Model núm. | SMS255 |
| Potència del motor | 1800W |
| Subministrament Voltage | 230 V |
| Mida de la fulla | 250 x 3.2 x Ø30mm |
| Sense velocitat de càrrega | 4500 rpm |
| Mitre Stop Increments | 0°, 15°, 22.5°, 30°, 45° Left & Right |
| Cross Cut (0° Bevel x 0° Table) | 85 x 310 mm |
| Mitre Cut (0° Bevel x 45° Table) | 85 x 215 mm |
| Bevel Cut (45° Bevel x 45° Table) | 50 x 215 mm |
| Dust Extraction Port (ID/OD) | Ø35/Ø43mm |
| Pes de l'article | 15.5 kg (34.1 lliures) |
| Dimensions del producte (L x A x A) | 460 x 640 x 410 mm (18.11 x 25.2 x 16.14 polzades) |
8. Garantia i Suport
Your Sealey SMS255 Double Sliding Compound Mitre Saw is covered by a limited warranty. Please refer to the warranty card included with your product for specific terms and conditions.
For technical support, spare parts, or warranty claims, please contact Sealey customer service or your authorized Sealey dealer. Ensure you have your model number (SMS255) and purchase details available when contacting support.
For more information, visit the official Sealey weblloc: www.sealey.co.uk





