Bafang Mid‑Drive Motor Chainring Bracket Fixing Nut, Anti‑Off Retaining Nut for M500 M510 M560 M600 M820 E‑Bike Mid Motor Sprocket Holder

Bafang Mid Drive Motor Chainring Bracket Anti‑Off Fixing Nut

This chainring bracket fixing nut is a direct‑replacement spare part for Bafang M‑series mid‑mounted electric bicycle motors. It fastens and secures the chainring‑sprocket bracket onto the motor output shaft, preventing sprocket bracket loosening, shifting or falling off caused by riding vibration and torque load. The special multi‑notch outer profile allows matching tool engagement for easy installation and removal.

Compatibility

✅ Compatible Motors: M500, M510, M560, M600, M820 Bafang mid‑drive ebike motors

Precise Specifications

Package Includes

1 × Bafang Chainring Bracket Fixing Nut

Key Features

✅ Anti‑Loosen & Anti‑Off Function: Firmly locks the chainring‑sprocket bracket in position, avoids bracket wobble, shifting or detachment under high‑torque pedaling and continuous vibration.

✅ Special Multi‑Notch Outer Profile: Matches dedicated service tool, enables convenient tightening and disassembly during sprocket or motor maintenance work.

✅ High‑Strength Durable Build: Heavy‑duty steel with anti‑corrosion surface treatment, wear‑resistant and rust‑proof for long‑term ebike operation.

✅ Direct OEM Replacement: Ideal replacement for worn, stripped or damaged original nut during chainring bracket removal, upgrade or motor overhaul.

✅ Practical Repair Hardware: Essential spare for ebike repair shops and DIY builders to resolve loose sprocket bracket, abnormal noise and chain misalignment faults.

Important Notes

• This nut is specially designed for Bafang M500/M510/M560/M600/M820 mid‑drive motors; it is NOT universal for all Bafang motor models.
• Apply correct torque during installation to avoid thread damage.
• A matching special tool is required for proper assembly and disassembly.

Critical replacement hardware for Bafang mid‑motor sprocket bracket maintenance and chainring upgrade work.