INJORA 540 Brushed Motor 55T Waterproof – Dual Ball Bearings, Rebuildable for 1/10 RC Crawlers
INJORA 540 Brushed Motor 55T Waterproof – Dual Ball Bearings, Rebuildable for 1/10 RC Crawlers
The INJORA 540 brushed motor in 55T is a waterproof, rebuildable motor designed for 1/10 scale RC crawlers and scale rigs. It uses dual ball bearings for smoother operation and includes replaceable brushes and springs for extended life. This motor fits popular models like the Axial SCX10 Pro, SCX10 AXI03007, 90046, TRX4, and D90.
What makes this motor different?
Unlike many budget brushed motors, this 540 motor is fully rebuildable. You can access the commutator, replace brushes and springs, and keep it running long after a sealed motor would be tossed. The dual ball bearings reduce friction and help maintain efficiency under load. Direct-solder tabs make wiring simple and secure.
Specs at a glance
| Motor type | 540 brushed, waterproof |
| Turn count | 55T (also available in 13T, 21T, 35T, 45T, 80T) |
| Motor diameter | 36 mm |
| Shaft diameter | 3.17 mm |
| Shaft length | 12 mm |
| Weight | 184 g |
| Operating voltage | 7.2 – 7.4 V (max 12 V) |
| Bearings | Dual ball bearings |
| Construction | Rebuildable, with replaceable brushes and springs |
Which turn count should you choose?
The turn count affects speed and torque. For crawling and trail driving, 55T is a common choice – it provides good low-speed control and torque without being too slow. For other uses:
- 13T / 21T: RC drift cars
- 35T / 45T: RC monster trucks and crawlers
- 55T: RC crawlers (this version)
- 80T: RC tractor trucks
Common questions about the INJORA 540 brushed motor
Is this motor truly waterproof?
Yes, it is designed to be waterproof, so you can run in wet conditions without immediate damage. However, always dry the motor after water exposure to prevent corrosion.
What does “rebuildable” mean for a brushed motor?
It means you can open the motor can, inspect the commutator, and replace the brushes and springs when they wear out. This extends the motor’s life and saves money.
Will this fit my RC car?
It is built to fit 1/10 scale crawlers and scale trucks with standard 540 mounting holes. It directly replaces motors in Axial SCX10 Pro, SCX10 AXI03007, 90046, TRX4, D90, VP VS4-10, Redcat Gen 8, and Redcat 7 Pro. Check your motor mount spacing – the shaft is 3.17 mm and 12 mm long.
What voltage should I use?
It works with 2S LiPo (7.4 V) or 6-cell NiMH (7.2 V) packs. Maximum voltage is 12 V.