Tryton angle grinder needle bearing for models TMS23021, TMS23020 (MPN YTMS21LI)

Needle bearing for Tryton angle grinder models TMS23021 and TMS23020. This spare part is designed to support rotary components in the gearbox assembly, providing low-friction contact and stable rotation under radial load. It is intended as a direct replacement for worn or damaged bearings during repair and routine maintenance of compatible Tryton grinders used in workshops and home environments.

Advantages

The bearing provides a compact design with high load-bearing capacity for its size, allowing smooth rotation of the grinder’s gearbox components and helping to reduce wear on mating parts. Its needle-roll construction offers consistent radial stiffness and reliable performance under continuous operation. The part enables cost-effective repair by restoring proper alignment and rotational behavior without replacing larger assemblies.

Suitable for

• Repair of Tryton TMS23021 and TMS23020 angle grinders
• Maintenance of gearbox and rotating assemblies
• Workshop and home tool servicing
• Replacement of worn or noisy bearings

Key specifications

• Type: needle/roller bearing for radial load
• Fitment: bearing for angle grinder gearbox rotary elements
• Construction: needle rollers in a compact cage for reduced friction
• Function: supports shaft rotation and reduces play
• Application environment: power tool gearboxes and high-speed rotary assemblies

How to use

Disassemble the grinder gearbox following the manufacturer's safety procedures and remove the worn bearing. Clean the housing and shaft surfaces, inspect for damage, and ensure correct seating dimensions. Press or slide the replacement needle bearing into position with appropriate tooling to avoid damaging the rollers or cage. Reassemble the gearbox, check shaft alignment and endplay, and test the tool at low speed before normal operation.

Usage recommendations

Use proper press-fit tools or bearing drivers to install the bearing without applying force to the rollers. Inspect surrounding gears and shafts for wear when replacing the bearing, and apply suitable lubricant if required by the grinder design to ensure long service life.