Long Shaft Dc Motor is a brushed‑type DC drive motor fitted with an extended custom‑length output shaft. Different from standard short‑shaft motors, this Long Shaft Dc Motor features an elongated drive shaft that transmits power to distant components without extra connecting couplings. It can pass through bulkheads and cabinet panels for external power delivery. When combined with gear reducers, it becomes a long‑shaft DC gear motor for steady torque output. Widely used in stirring machinery, conveyor rollers, duct fans, lab agitators and custom‑built automation jigs, it delivers a flexible and dependable DC‑transmission solution for cross‑space power transfer.
High‑precision extended solid output shaft
The drive shaft is machined from high‑strength round steel and calibrated for concentricity to minimize radial run‑out at high‑speed rotation. Keyways, flat‑sides or threaded holes can be processed on the shaft surface for direct mounting of impellers, rollers and mixing paddles.
Dual‑bearing support construction
An extra auxiliary bearing is fitted near the shaft extension end to carry radial loads generated by the long cantilever. Shaft wobble is greatly reduced, bearing wear is lowered and long‑term coaxial‑rotation stability is guaranteed.
Standard motor body with customizable shaft length
The main drive unit adopts proven DC‑motor architecture for stable electrical performance. Shaft‑extension length can be tailor‑made, while flange and base mounting dimensions follow universal standards, enabling direct replacement for conventional DC motors.
Simplified transmission layout with fewer intermediate parts
The extra‑long drive shaft reaches the load directly and removes the need for extra couplings or extension rods. The whole transmission chain becomes shorter, component‑purchase costs are cut and internal machine layout is streamlined.
Through‑panel installation enables flexible mechanical design
The long shaft can penetrate casings and partition walls, separating the motor drive body and working load into independent chambers. The motor can be installed away from heat, dust or liquid hazards, extending overall equipment service life.
Stable torque output and improved resistance against offset loads
Dual‑bearing support counteracts lateral pulling‑force caused by cantilever loads. Even with eccentric workpieces mounted on the shaft tip, it maintains constant‑speed rotation and reduces noise and unexpected shutdowns induced by shaft vibration.
| Long Shaft Dc Motor | |
|
Wire Number |
8 wires for hall type, 3 wires for no hall type |
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Motor diameter |
28mm ~ 166mm |
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Speed options |
1500rpm 2000rpm 2500rpm 3000rpm 4000rpm |
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Power range |
10W ~ 4200W, it can be customized |
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Output shaft types |
Round shaft, keyway shaft, pinion shaft, spline shaft, etc. |
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Voltage range |
12V 24V 36V 48V 90V 180V 220V 310V |
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Accessories |
Internal driver, Outer driver, Hall sensor, Brake, Encoder, etc. |
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Output flange |
B14 flanges, B5 flanges, square flanges, Nema flanges, no flanges |
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Can be used with |
Helical gearbox, Worm gearbox, Bevel gearbox, Planetary gearbox |
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Package |
carton/wooden box |
Q: Will torque be affected after fitting a gear reducer to a Long Shaft Dc Motor?
A: Gearboxes multiply torque while shaft extension itself does not change torque value. However, extremely long cantilevers risk shaft deflection under heavy loads. It is recommended to shorten shaft length or add an external bearing support for heavy‑duty applications.
Q: What is the main difference between a long‑shaft DC motor and an ordinary DC motor?
A: Their core electrical performances are almost identical. The key distinction lies in the extended output shaft. Standard short‑shaft motors connect to nearby loads, while long‑shaft variants are built for stirring, through‑wall mounting and remote‑power‑transfer tasks.
Q: What standard supply voltages are available for this Long Shaft Dc Motor?
A: Standard DC voltage choices are 12V, 24V, 36V, 48V. Custom shaft‑extension length, shaft diameter, rotation speed and power ratings are available on bulk orders.
Q: Why does the long shaft vibrate during high‑speed rotation?
A: Vibration is usually caused by over‑long cantilever, unbalanced load or concentricity error. Check load balance first. For high‑speed operation, add an outer support bearing and shorten cantilever distance.
Q: Can I weld or re‑machine the tip of the long shaft on‑site?
A: On‑site welding is not recommended, since high temperature will damage shaft hardness and precision. Drilling, tapping and keyway processing should be completed during manufacturing.
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