Overview – BRUSH, SPECIAL CYL HEAD ST876
For Cummins starting and rotating electrics as the special cylinder-head brush, the Cummins BRUSH, SPECIAL CYL HEAD ST876 provides the correct fit and performance expected from a genuine-spec replacement.
Parts Characteristics
A special carbon motor brush for the cylinder-head motor, carrying current to the commutator and maintaining contact under spring load. Brush condition sets the motor’s life and torque, so a correctly graded brush keeps the motor pulling instead of arcing.
Applicable Models & Applications
Used on Cummins brush-motor arrangements specifying this special brush. Match the grade, dimensions and lead position against your old brush or the motor drawing – special brushes are not interchangeable by appearance.
Maintenance & Replacement
Inspect brushes for length, chatter marks and a glazed commutator face at every electric-motor service. A short or chattering brush arcs, and arcing destroys the commutator it runs on.
Fit brushes as a matched set and seat them to the commutator. A brush that has not bedded in runs hot and the motor loses torque exactly when load is applied.
Check the spring tension while the motor is open. A weakened spring lets the brush lift under vibration and the motor cuts out under load, a fault that looks like a wiring problem.
Keep the special brushes for your motor available. They are wear items, they fail by degrees, and a motor stopped on a brush is a machine waiting on a small part.
Price Reference (USD)
Expect a market price around USD 8-30 for the BRUSH, SPECIAL CYL HEAD ST876; we confirm the exact figure on your pro-forma invoice.
Value & Service
We supply brand-new special cylinder-head motor brushes with the grade and dimensions confirmed against your Cummins motor, so the motor keeps pulling.
Choose Racer Machinery for the BRUSH, SPECIAL CYL HEAD ST876 and other Cummins Hydraulic Parts – genuine-spec replacements sourced and inspected before they leave the warehouse.
