common rail injector calibration shim B31 injector shim

common rail injector calibration shim B31 injector shim

competitive price~         prompt delivery~          first-rate service~

1. product precision:

precision is the key requirement for adjusting shims. Accurate adjustment for fuel quantity is completed depending on grouping of products. We adopt high- precision optical ruler to control lapping dimension, and can control product precision dimension within 0.002mm. we finish grouping by inspecting one product with two products inside dust-free workshop. One product is measured for no less than 5 times from finishing process to finished product. (testing methods: use high-precision digital display micrometer to measure conformity between actual dimension and required dimension, and whether the dimension for same-grouped products is same or not.)

2. geometric tolerance

geometric tolerance of adjusting shims is directly related to the maintenance quality of fuel injectors. Main geometric tolerance requirement for adjusting shims is depth of parallelism. Large shim will affect product tightness while small shim will affect reliability of products. We adopt high-precision double-sided lapping machine to ensure and control depth of parallelism for products within 0.002mm. adopting of one-time forming process better ensures product axiality. (testing methods: use parallelism tester and deflection instrument to test parallelism depth and axiality respectively.)

3. material quality and hardness

material quality and hardness of adjusting shims affect durability and stability of products. We choose high quality material and advanced thermal treatment equipments/technology.

4. cleanliness

product cleanliness can be better ensured due to multi-channel ultrasonic cleaning, dust-free workshop packaging and plastic case sealed packaging.

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Linda Zhao
Taian Common Rail Industry & Trading CO., LTD
Tel: 0086-538-6527066

Mobile/whatsapp: +86 13053823869 

Skype: taiansunshine
QQ/wechat: 810543521