Product overview
The Scorpion HK-4015 Shaft Kit (5mm) provides a factory replacement shaft for HK-4015 series helicopter motors after shaft damage. Its replacement shaft measures 6mm in diameter and 73.7mm long, with a 5mm output end accommodating 5mm pinion gears. The motor construction description also specifies 8mm hardened steel shafts for HK-4015 motors. The supplied configuration comprises one HK4015 Motor Shaft (5mm), one washer and two C-clips; the weight including packaging is 32g.
Integration into another brushless motor depends on that motor requiring the specified shaft diameter, length and 5mm end. Where a shorter shaft is needed, it can be trimmed with a Dremel tool and cut-off wheel. In Scorpion motors, the shaft has a slight press fit within the aluminum front housing, so loosening the setscrews alone does not release it. Removal requires a bearing press or drill press, with the front housing supported in a wooden block to prevent warping.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity | Scorpion HK-4015 Shaft Kit (5mm) |
| Product type and application | Factory replacement motor shaft kit for all Scorpion HK-4015 series helicopter motors. |
| Stated original motor shaft construction | 8mm hardened steel shafts.Scorpion HK-4015 motors. |
| Shaft diameter | 6mmHK-4015 series replacement shaft. |
| Shaft length | 73.7mmHK-4015 series replacement shaft. |
| Output shaft end and pinion interface | 5mm output shaft end for 5mm pinion gears.Stock HK-4015 motors. |
| Other motor fit | Fit is conditional on matching shaft dimensions.Other brushless motors requiring a 6mm shaft of 73.7mm length with a 5mm end. |
| Length adaptation | Shafts can be shortened using a Dremel tool and cut-off wheel.If necessary to fit other motors. |
| Housing interface | Slight press fit into the aluminum front housing.Shafts installed in Scorpion motors. |
| Removal requirements | Removing setscrews alone does not release the shaft; a bearing press or drill press is required.During shaft removal, with the motor front housing supported in a block of wood to prevent warping. |
| Motor shaft quantity | HK4015 Motor Shaft (5mm) x1Included in the box. |
| Washer quantity | Washer x 1Included in the box. |
| C-clip quantity | C-Clip x 2Included in the box. |
| Weight | 32gIncluding packaging. |
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