HOLLOW SHAFT Cold forged motor shaft for weight reduction, cooling and cost reduction

Hollow shaft by cold forging that goes beyond conventional wisdom
Proposal for motor shafts.
This lightweight and high-strength hollow shaft uses our unique deep hole forging technology.
We propose high added value by using it for motor shafts.
Proposal for how to use Kaneta’s hollow forging for motor shafts
  1. We propose improving shaft cooling by using a hollow shaft
  2. We contribute to vehicle weight reduction with hollow shaft technology for drive parts
  3. Reduce manufacturing costs with integrated molding by cold forging!
POINT
01

Shaft cooling cools the motor from the inside

It realizes heat resistance and high strength required for high rotation speeds, and is compatible with the harsh operating environment of motors.
Using Kaneta’s hollow shaft technology, we propose added value such as low-cost cooling performance and high strength.
POINT
02

Reduces energy loss by reducing shaft weight

Reducing the weight of drive parts directly leads to reduced energy loss.
Kaneta’s hollow shafts, which are both lightweight and highly rigid, contribute to improving the fuel efficiency of EVs.
POINT
03

With cold forging hollow shaft technology
we propose cost reductions in capital equipment costs and number of parts

Kaneta’s hollow shafts are formed as one piece by cold forging.
This achieves significant cost reductions compared to cutting and welding.
This reduces welding of divided parts and realizes high rigidity and cost reduction
Reduce material costs with plastic processing that does not cause material loss
Kaneta’s hollow shafts are plastic processed in-house from coil material and bar material.
Compared to cutting processing, it can reduce material costs by up to 15%*.
*Conditions vary depending on the shape, so it is a reference value.
Kaneta’s unique deep hole processing realizes one-shot production of hollow shafts
Processing record of one-shot hole diameter x 5 times, multi-stage 10D or more