Crank Angle Sensor Frequently Asked Questions
Question number FAQ-0003
I am using the crank angle detection system with the slit disk model PP-010A, but vibrations can sometimes cause surface runout or distortion. What measures can be taken to address this?
The slit disk PP-010A is made of a 0.5 mm thick metal plate, and due to excessive vibrations transmitted from the rotating device, surface runout and distortion may occur. In such cases, please reinforce the PP-010A slit by sandwiching it between disk-shaped plates as shown in the figure below to prevent surface runout and distortion.

- We manufacture reinforcement plates for the PP-010A slitted disk to address surface runout and distortion issues. The reinforcement plates for the PP-010A are made to order, so please contact the nearest sales office for details on pricing and delivery. We also sell the PP-011B slitted disk, which comes with standard reinforcement plates, so please consider using this option as well. The specifications for the PP-010A and PP-011B slitted disks are as shown in the table below.
| PP-010A | PP-011B | |
|---|---|---|
| diameter | φ200mm | φ200mm |
| thickness | 0.5mm | 0.3mm |
| material | stainless steel | stainless steel |
| Use the range of rotational speed. | 0~6000r/min | 0~6000r/min |
| number of pulses | 360P/R & 1P/R | 720P/R & 1P/R |
| Weight | approximately 110 grams | approximately 70 grams |
| Outline Drawings | pp010a_01a.pdf | pp011b_11a.pdf |
Last updated: December 15, 2008