Festool KAPEX KS 120 EB Replacement Gearbox Assembly

At a Glance: Genuine Festool replacement gearbox assembly for compatible KAPEX KS 120 EB sliding compound mitre saws.

The Festool KS 120 ET-BG(EB) gear assembly is a genuine replacement component for compatible KAPEX KS 120 EB sliding compound mitre saws. It forms a critical part of the machine's drive system, transferring rotational power through the saw's drivetrain towards the blade spindle.

A damaged or excessively worn gearbox assembly can contribute to abnormal mechanical noise, rough operation, excessive play, overheating or unreliable transfer of power. Replacing a professionally diagnosed faulty assembly with the specified Festool component helps restore the smooth and dependable drive performance expected from the KAPEX KS 120.

This is a specialist service assembly rather than a complete motor or an external saw accessory. Because multiple KS 120 production versions and regional configurations exist, compatibility must be confirmed using the complete machine type number and serial number. Installation, lubrication where specified, adjustment and final safety testing should be performed by Festool or a suitably qualified power-tool repair technician.

The gearbox provides the essential mechanical link between the motor and cutting system. A correctly installed genuine replacement helps the saw transmit power smoothly while preserving the fit and alignment of the original Festool drivetrain.

• Genuine Festool spare part: Manufactured as the specified replacement gear assembly for compatible KS 120 machines.
• Gear-case assembly: Supplied in assembly format for professional workshop replacement.
• Drivetrain component: Forms an important part of the power-transfer system between the motor and blade spindle.
• Model-specific design: Developed around the internal construction of applicable KAPEX KS 120 EB variants.
• Professional repair solution: Allows a correctly diagnosed gearbox fault to be repaired without replacing the complete saw.
• Traceable identification: Festool part number 205177 and GTIN 4014549371770 assist with accurate component selection.

• Designed primarily for compatible Festool KAPEX KS 120 EB sliding compound mitre saws.
• Listed in the spare-parts documentation for applicable 120V, 230V and 240V KS 120 EB variants.
• Confirmed applications include selected machine type numbers such as 10037842, 10037846, 495649 and 495773.
• Additional KS 120 EB variants may use this assembly when confirmed by Festool spare-part number 205177.
• Compatibility depends on the complete machine type number, production version and serial number.
• Do not assume compatibility with every KS 120 REB or other KAPEX model without confirmation from Festool.