M20–M25 Fixed Hydraulic Shock Absorbers
| Item | FK M20–M25 Series |
|---|---|
| Product type | Fixed hydraulic shock absorber |
| Series models | FK-2016L, FK-2016M, FK-2016H FK-2022L, FK-2022M, FK-2022H FK-2050L-R, FK-2050M-R, FK-2050H-R FK-2530L, FK-2530M, FK-2530H FK-2540L, FK-2540M, FK-2540H FK-2550L-R, FK-2550M-R, FK-2550H-R |
| Model characteristics | Multiple-orifice type, fixed type, low-speed, medium-speed, high-speed, and long-stroke models |
| Thread size | M20×1.5, M25×1.5, M25×2.0 |
| Stroke | 16 mm, 22 mm, 30 mm, 40 mm, 50 mm |
| Max. absorption energy | 147 J |
| Max. absorption energy per minute | 637 J/min |
| Impact speed range | 0.3～3 m/s, depending on model |
| Max. equivalent mass | 480 kg |
| Max. cycle rate | 60 cycles/min |
| Operating temperature range | -5 ~ 70 ℃ |
| Max. drag | 6,370 N |
| Piston rod return force | Depending on model, 18.1 ~ 71.5 N or lower |
| Orifice type | Multiple-orifice type |
| Damping type | Fixed |
| End types | -S: capless -C: with cap -R: with urethane cap FK-2050 / FK-2550: -R models FK-2540: capless type not available |
| Allowable eccentric angle | Within ±2.5° FK-2050 / FK-2550: within ±1.0° |
Specification notes
Q1: What is the FUJI LATEX FK M20–M25 Series?
A: The FK M20–M25 Series consists of fixed hydraulic shock absorbers for industrial machinery, automation equipment, transfer mechanisms, and other end-stop applications.
Q2: What models are included in the FK M20–M25 Series?
A: The series includes FK-2016, FK-2022, FK-2050, FK-2530, FK-2540, and FK-2550, with different low-, medium-, and high-speed specifications.
Q3: Is the FK M20–M25 Series fixed or adjustable?
A: The series uses fixed damping characteristics and does not require damping adjustment.
Q4: What do L, M, and H mean in FK model numbers?
A: L, M, and H identify different impact-speed characteristics for low-, medium-, and high-speed applications. The actual speed range should be checked for each model.
Q5: What is the maximum absorption energy of the FK M20–M25 Series?
A: Maximum absorption energy reaches 147 J, with the FK-2550 Series providing the highest absorption capacity on this page.
Q6: What is the maximum equivalent mass?
A: Maximum equivalent mass reaches 480 kg with FK-2540L. Equivalent-mass ratings vary according to model and speed classification.
Q7: What is special about FK-2050 and FK-2550?
A: FK-2050 and FK-2550 are 50 mm long-stroke models supplied in the -R urethane-cap configuration and have an allowable eccentric angle within ±1.0°.
Q8: Is a capless FK-2540 available?
A: No. The FK-2540 does not offer a capless -S configuration, so the available end configuration should be confirmed during selection.
Q9: What applications are suitable for the FK M20–M25 Series?
A: Typical applications include automation equipment, slides, transfer mechanisms, pneumatic cylinder ends, processing equipment, and industrial machinery requiring fixed impact absorption.
Q10: How do I select the correct FK M20–M25 model?
A: Check moving mass, impact speed, driving force, absorption energy, cycle rate, stroke, thread size, and end configuration, or contact GATO Corporation for model selection support.