Our shock absorbers undergo rigorous international quality inspections at every stage of production, ensuring our superior quality. With this benchmark, we manufacture approximately 100,000 units per month across a wide range of around 100 different models. Our efficient production lead times, guaranteeing prompt delivery, and optimized manufacturing processes enable us to achieve 100% customer satisfaction and unparalleled quality.
Characteristics:
- Wide range (traditional and monoshock) that adapt to various motorcycle models
- High Resistance
- Hard chrome/nickel plated piston rod for smooth operation
- Use of high-quality materials for suspension springs to improve durability
- Optimized suspension system design to withstand high workloads
- Gas-charged hydraulic system for improved driving comfort
- Splash-proof suspensions for different types of roads
- High cushioning for improved shock absorption capacity
- Undistorted cavitation graph at 500 cycles.
Related products
- Raw Material
- Manufacturing
- Evidence
Our superior quality is due to our SGS-approved factories, where products achieve perfection using countless quality parameters. We use a minimal BOP (buyer's parts) to maintain complete quality control.
| Parameter | Details | Elpra | Chinese Product | ElpraAdvantage |
|---|---|---|---|---|
| BOP (Parts Purchased) |
Top support | BOP | BOP | Internal components offer a better control process, therefore ensuring higher quality and shorter shipping times |
| Lower support | BOP | BOP | ||
| Spring | Internal | BOP | ||
| Inner tube | Internal | BOP | ||
| Inner piston | Internal | BOP |
Our manufacturing facilities give us an edge over other Chinese products. With a fully automated line requiring minimal manual intervention, we are a leading manufacturer of shock absorbers. The core component of the shock absorber, the spring, is also manufactured in-house to ensure consistent quality control.
| Details | Elpra | Chinese Product | Advantages of Elpra |
|---|---|---|---|
| Automated line | Fully automated line | Manual or semi-automated line | By using a fully automated line, we offer minimal tolerance with negligible rejection in the final stage. |
| Spring Manufacturing | Inside | Outsourced | In-house manufacturing improves production control |
| Oil filling | Oil filling via the automatic oil filling machine |
Manual filling | Standardized filling ensures a consistent, spill-free cushioning feel |
| Electroplated | 100% automated veneering | Manual or semi-automated installation | Minimal possibilities of internal rejection levels of the almost or completely finished product |
| Temperature | 20 ± 3 | °C | Speed | 0.523 | m/s | 50 | mm |
| Cycle | Specification | Result | |||
|---|---|---|---|---|---|
| Visual (graphic) |
Sample # 1 (OK or NOK) |
Sample # 2 (OK or NOK) |
Sample # 3 (OK or NOK) |
Status (OK or NOK) |
|
| 5th | The hydraulic delay should not exceed 50% of the stroke test |
OK | OK | OK | OK |
| 100th | OK | OK | OK | OK | |
| 200th | OK | OK | OK | OK | |
| 300th | OK | OK | OK | OK | |
| 400th | OK | OK | OK | OK | |
| 500th | OK | OK | OK | OK | |
In this test, the internal forces of a damper are measured using a moving hydraulic system. Load, displacement, and velocity measurements are recorded to create hysteresis curves that accurately show the effects of frequency, displacement, and temperature on a damper. Test samples can be soaked at controlled temperature and humidity before each cycle, or the test can be performed in an environmental chamber. If the damping force graph is symmetrical about the origin, then the damping and compression are equal, and the damper is OK.
Friction force test:
Friction force is the sum of unwanted forces acting on the shock absorber. These forces include the forces between the oil and contaminated particles, viscous forces within the oil, and the force between the piston and cylinder. The fewer the friction forces, the better the quality of the shock absorber. Virtually zero friction is impossible.
| Temperature | 20 ± 3 | °C | Speed | 0.002 | m/s | 50 | mm |
| Cycle | Specification | Result | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Strength (Fat) | Unit | Tolerance | Sample #1 | Sample # 2 | Sample # 3 | Min | Max | Beef | ||
| – | + | |||||||||
| 4th | 0.00 | kN | 0.00 | 70.00 | 23.00 | 21.00 | 20.00 | 20.00 | 37.00 | OK |
Corrosion test
In this test, the shock absorber parts are kept under controlled environmental conditions for different hours.
- Ni-Cr = 16 hours
- Zn = 48 Roras
- Hardness Cr = 24 Hours
- Painting = 48 Hours
| Item | Specification | Result | ||||||
|---|---|---|---|---|---|---|---|---|
| Duration | Unit | Tolerance | Sample # 1 (OK or ERR) |
Sample # 2 (OK or ERR) |
Sample # 3 (OK or ERR) |
Result (OK or ERR) |
||
| – | + | |||||||
| Ni-Cr (CASS) |
16 | h | 0 | 0 | OK | OK | OK | OK |
| Zi (NSS) |
48 | h | 0 | 0 | OK | OK | OK | OK |
| Cr Hardness (NSS) |
24 | h | 0 | 0 | OK | OK | OK | OK |
| Paint (NSS) |
48 | h | 0 | 0 | OK | OK | OK | OK |
Rubber bushing test:
In this test, the rubber bushings are visually checked after 200,000 damping motion cycles.
| Temperature | 20 ± 3 | °C | Speed | 0.523 | m/s | Stroke | 50 | mm |
| Cycle | Specification | Result | ||||||
|---|---|---|---|---|---|---|---|---|
| Visual | Tolerance | Sample # 1 (OK or ERR) |
Sample # 2 (OK or ERR) |
Sample # 3 (OK or ERR) |
Sample # 4 (OK or ERR) |
Result (OK or ERR) |
||
| – | + | |||||||
| 200,000th | Without deformations or cracks | OK | OK | OK | OK | OK | ||
Dimensional test:
In this test, approximately 15-20 dimensions are checked after the final assembly of the shock absorber according to the drawing. The instruments used are:
• Ruler
• Vernier Caliper
• Spring gauge
| Item | Specs | Result | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Dimensions | Unit | Tolerance | Sample #1 | Sample # 2 | Min | Max | Result | ||
| – | + | ||||||||
| 1 | 21.00 | mm | 0.20 | 0.20 | 21.20 | 21.16 | 21.16 | 21.20 | OK |
| 2 | 14.50 | mm | 0.20 | 0.20 | 14.70 | 14.66 | 14.66 | 14.70 | OK |
| 3 | 32.00 | mm | 1.00 | 1.00 | 31.90 | 31.80 | 31.80 | 31.90 | OK |
| 4 | 7.20 | mm | 0.10 | 0.20 | 7.40 | 7.30 | 7.30 | 7.40 | OK |
| 5 | 28.00 | mm | 0.20 | 0.20 | 28.00 | 27.93 | 27.93 | 28.00 | OK |
| 6 | 12.10 | mm | 0.00 | 0.20 | 12.24 | 12.20 | 12.20 | 12.24 | OK |
| 7 | 88.00 | mm | 1.00 | 1.00 | 87.20 | 87.00 | 87.00 | 87.20 | OK |
| 8 | 21.00 | mm | 0.20 | 0.00 | 20.86 | 20.90 | 20.86 | 20.90 | OK |
| 9 | 343.00 | mm | 3.00 | 3.00 | 344.00 | 343.00 | 343.00 | 344.00 | OK |
| 10 | 273.00 | mm | 3.00 | 3.00 | 274.00 | 273.00 | 273.00 | 274.00 | OK |
| 11 | 18.00 | mm | 0.00 | 0.25 | 18.20 | 18.23 | 18.20 | 18.23 | OK |
| 12 | 70.00 | mm | Ref | Ref | 70.00 | 70.00 | 70.00 | 70.00 | OK |
| 13 | 10.00 | mm | 0.05 | 0.05 | 9.97 | 9.97 | 9.97 | 9.97 | OK |
| 14 | 50.60 | mm | 0.10 | 0.35 | 50.88 | 50.94 | 50.88 | 50.94 | OK |
| 15 | 208.50 | mm | 5.00 | 5.00 | 206.50 | 206.90 | 206.50 | 206.90 | OK |
| 16 | 45.00 | mm | 2.00 | 2.00 | 45.00 | 45.00 | 45.00 | 45.00 | OK |
| 17 | 35.00 | mm | 2.00 | 2.00 | 35.00 | 35.00 | 35.00 | 35.00 | OK |
| 18 | 6.00 | mm | 1.00 | 1.00 | 6.00 | 6.00 | 6.00 | 6.00 | OK |
| 19 | 4.50 | mm | 1.00 | 1.00 | 4.50 | 4.50 | 4.50 | 4.50 | OK |