Ningbo XiaYi Electromechanical Technology Co.,Ltd.
OEM XIAYI Parts! Good quality! Good service!
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50MM PTFE Banded Piston With Good Wear Resisitance Used In Truck Shock Absorbers
Conventional Design
Finished OD Tolerance of +/-20 Microns
Don't Require Secondary Operations
Banding Can Design with Single Lip or Double Lip
Potential for Uncontrolled Leak Paths
Dimension Bond Value Added Benefits
Tolerance +/-10 Microns
Wear Band Assembly Eliminated
Machining of Grooves Eliminated
Banding Materials Purchases Eliminated
Larger Baring Surface Area
No Banding to Dislodge, Shift, Split or Tear
No Uncontrolled Leak Paths
Allows For Shorter Overall Height & Less Metal Cost
Larger Diameter Valve Face Area for Design
Reduced Dead Length
Ease of Assembly into Pressure Tube
Greater Wear Resistance with Lower Friction
Specifications:
| Physical performance for shock piston | tensile strength | More than 18MPa |
| elongation @ break | More than 160% | |
| shore hardness (bands) | 57 - 61 | |
| density | 2.06 – 2.19 g/cm3 | |
| wear | Less than 50mg | |
| friction coefficient | Less than 0.2 | |
| hardness (sinter piston) | HRB60-80 | |
| Technical requirements for sinter piston | Raw material F50 - U3 - 66 or FC - 0208 | |
| Steam treatment | ||
| OD tested by digital air gauge | ||
The Piston Process
Step 1: 100% Laser Inspection of the as-received OD ensures the correct amount of material is applied, thus yielding the finished dimension desired.
Step 2: Computer-controlled application of the Permanently Bonded Band material.
Step 3: 100% Laser Inspection of the OD ensures the desired finished dimension is obtained after process curing the band material.
Step 4: Apply Permanently Bonded 100% pass-thru gauging of each finished piston to assure the piston meets Form-Fit and Functional requirements prior to packaging. Band material via computer controlled metering.
Step 5: Product ready for assembly.
Description:
XIAYI company is specialized in design and producing PTFE banded shock absorber pistons,at the same time,we design and manufacture automatic skirting machines. Till now we have produced so many different types of shock absorber pistons with the diameter from ø20mm~ø50mm.We make PTFE discs and toolings in our own factory,can control the quality effectively and also can save much time.
Advantages
The ability to apply the same technology across all types and sizes of pistons affords economies not available with other conventional band methodologies.
100% inspection and close tolerance permits part-to-part and unit-to-unit control of damping forces.
The quality of the material applied eliminates fragment contamination - oil tests following one million cycle bench testing have yielded near original oil quality. This is not typical on units employing a conventional band system.
Close tolerance control affords the closest fit, calibrated leakage around the piston, eliminating potential leak paths and/or uncontrolled leaks due to normal flexible bands distorting and wearing.
No machining cost eliminates the cost to groove the OD of the piston to retain the band.
Applications:
Car or motorbike shock absorbers
Competitive Advantage:
1. Consistency in size
2. Infrared ray detect the diameter
3. Strict control plan
4.100% testing for outer diameter
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