Linear 2500-1879, Brush Dc Motor 2500-1594/1902
The Linear 2500-1879 is a replacement brush component for compatible Linear / OSCO DC gate operator motor assemblies. In the field, brushes are one of the wear items inside a brushed DC motor. When the brush material wears down, the motor may lose torque, run unevenly, chatter under load, or stop working even though the control board is still sending power.
This part is commonly listed for motor references 2500-1594 and 2500-1902. Those motor numbers are more important than the outside gate operator cover because Linear and OSCO used similar-looking service parts across different operator generations. Matching the original motor label helps avoid ordering a brush that looks close but will not seat correctly in the brush holder.
Use this part when the motor assembly has been inspected and the failure is isolated to brush wear, not a bad motor drive board, seized gearbox, damaged wiring, or low battery/charger problem. If the motor has heavy commutator damage or heat discoloration, replacing brushes alone may not correct the issue.
Compatible With
This item is commonly associated with the following Linear / OSCO parts, operators, or applications. Confirm the original part number, operator model, voltage, and parts diagram before ordering.
- Select Linear / OSCO DC motor assemblies marked 2500-1594
- Select Linear / OSCO DC motor assemblies marked 2500-1902
- Linear / GTO SWD Series swing gate operators when equipped with the matching DC motor assembly
- Linear / GTO MSG-D Series slide gate operators when equipped with the matching DC motor assembly
- Older Nortek / Linear PRO Access / OSCO DC gate operator service applications using the listed motor numbers
- Automatic gate operator repair jobs where the original motor brush number is 2500-1879 or the motor parts diagram calls for this brush
Features & Specifications
| Manufacturer | Linear / OSCO / Nortek |
|---|
| Product Type | DC motor brush / motor service part |
|---|
| Part Number | 2500-1879 |
|---|
| Application | Replacement brush for select brushed DC gate operator motors |
|---|
| Compatible Motor References | 2500-1594 and 2500-1902 |
|---|
| Compatible Operator Type | Select DC swing and slide gate operators using the matching motor |
|---|
| Notes | Match by motor label and parts diagram before ordering |
|---|
Also Known As / Related Part Numbers
- 2500-1879
- 25001879
- LIN-2500-1879
- Linear 2500-1879
- OSCO 2500-1879
- Brush DC Motor 2500-1594/1902
- 2500-1594 brush reference
- 2500-1902 brush reference
Technician Note
If a DC gate operator hums, clicks, or stops under load, do not assume the brushes are the only failed part. Check for a binding gate, damaged motor leads, weak batteries, charger problems, and motor drive board faults before replacing brush parts.
Before Ordering
- Confirm the existing motor is marked 2500-1594 or 2500-1902.
- Compare the brush shape and lead arrangement with the original part.
- Inspect the motor commutator for severe scoring, burning, or uneven wear.
- Do not substitute this brush for AC motor parts or unrelated DC motors.
- Verify the operator parts diagram if the motor has been replaced before.
Professional Advisory
Motor service and electrical diagnosis should be handled by a qualified gate technician when the operator has high-voltage power, damaged wiring, or unsafe gate movement. Do not bypass safety circuits to test motor operation.
Product Q&A
Is 2500-1879 the complete motor?
No. This listing is for the brush service part associated with select DC motor assemblies. If the entire motor is failed, match the full motor part number instead.
Which motor numbers is this brush commonly associated with?
It is commonly listed with Linear / OSCO DC motor references 2500-1594 and 2500-1902.
Can this fix a gate opener that only clicks?
It may help if the motor brushes are worn, but clicking can also come from weak batteries, a charger fault, bad wiring, a failed control board, or a seized gate.
Is this used on SWD and MSG-D operators?
It may be used on select SWD swing and MSG-D slide operators when those operators have the matching 2500-1594 or 2500-1902 DC motor assembly.
Why should I match the motor label?
Gate operator covers and model names can overlap across generations. The motor label and parts diagram are the safest way to confirm the correct brush part.
