High Precision Customized CNC Machining Stainless Steel Aluminum Electric Bicycle Motor Parts

PEW Plastic Flat Springs
PEW Plastic Flat Springs |
CSB® plastic wear resistance washer. Suitable for a fitting to the uncontrollable axial space in order to reduce the vabriation and noise during the operation.
● Compensate the axial clearance and machining tolerance
● Shock absorbing and noise optimization
● Maintenance free and self-lubricated
● Corrosion resistance and light weight
Standard Products |
Part No. | Spring Deflections and Spring Forces | Weigh t[g] | ||||||||||
D [mm] | d [mm] | t [mm] | h0 [mm] | h0.25 [mm] | F0.25 [N] | h0.5 [mm] | F0.5 [N] | h0.75 [mm] | F0.75 [N] | Fmax [N] | ||
PEW13-05 | 10 | 5.2 | 0.5 | 0.25 | 0.06 | 1 | 0.13 | 2.4 | 0.19 | 3.6 | 5 | 0.04 |
PEW13-06 | 12.5 | 6.2 | 0.7 | 0.3 | 0.08 | 3 | 0.15 | 5.1 | 0.23 | 8 | 12 | 0.11 |
PEW13-08 | 16 | 8.2 | 0.9 | 0.35 | 0.09 | 4 | 0.18 | 8 | 0.28 | 11 | 15 | 0.20 |
PEW13-10 | 20 | 10.2 | 1.1 | 0.45 | 0.11 | 5 | 0.22 | 10 | 0.33 | 15 | 18 | 0.33 |
PEW13-12 | 25 | 12.2 | 1.5 | 0.55 | 0.14 | 9 | 0.28 | 18 | 0.42 | 27 | 40 | 0.85 |
PEW13-16 | 31.5 | 16.3 | 1.75 | 0.7 | 0.18 | 15 | 0.35 | 32 | 0.53 | 51 | 70 | 1.44 |
PEW13-20 | 40 | 20.4 | 2.25 | 0.9 | 0.23 | 35 | 0.45 | 70 | 0.68 | 110 | 130 | 3.10 |
D: Outer Diameter
d: Inner Diameter
t: Thickness
h0: Maxium downward deflection of spring
h0.25, h0.5, h0.75: The maximum downward deflecttion 25%, 50%, 75%.
F0.25, F0.5, F0.75: Spring force with 25%/50%/75% downward deflection
Fmax: The maximum spring force
Product Design |
▊Structure design
CSB-PEW® plastic flat spring is designed with a bump axial surface for the purpose of compensates the axial fitting and machining tolerance in addition to function as a normal washer. Therefore the operation mechanism could be more stable and with less noise.
▊Material design
CSB-PEW® plastic flat spring is made from the professional wear resistance material CSB-EPB13 which provides good wear resistance and excellent spring feature. At the same time, CSB could also provide the spring washer with high temperature (up to 250℃) material CSB-EPB5 and FDA approved material CSB-EPB5A.
▊Assembly design
In order to adjust the fitting clearance, a single flat spring is usually inserted. For bigger clearance adjustment, a group of flat springs combined with back to back or face to face is also a good solution. If a higher elastic characteristic is needed, piling the flat springs parallel and assembles into the required position.
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