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Jarret Industrial shock absorbers

BCLR Series

Application Worksheet

4 - Calculation of Effective Reaction Rdy_e

BCLR-100 — BCLR-1000 Series Based On

□ Impact velocity : 2 m/s

□ Operating temperature : - 20° to + 40°C

□ Surface protection : Electrolytic zinc & Painting

□ Dynamic performance diagram

Rdymax - RdyO \ x Ce + Rdy0 C /

Rdy_e

(0,1V + 0,8)

5 - Application Example Data: Effective mass = 75 t

Effective impact speed = 2,7 m/s Maximum allowable structural force: 650 kN

1: BCLR400 selected

2: Energy dissipated/impact is 274 kJ

3: Maximum allowable impact frequency

8 x 400 / 274 = 12 (10 impacts/hour is acceptable)

4: Effective stroke:

_A Force kN

Rdymax

RdyO

► Stroke mm

-¿jjo jûo suo âoo nxx) yniíi

Symbols:

En = Energy Capacity C = Maximum Stroke Rdy = Dynamic Reaction

)

274

Ce = 850 x

+ 1,83- 1,35

Me Ve²

400 (0,027 x 2.7 + 0,22)

Ce = 587mm

2 - Allowable Impact Velocity

Impacts/hour

F < 8 x

5: Rdye = 520 (0,1 x 2,7 + 0,8) = 556 kN

(which is less than maximum allowable reaction force of 650 kN)

Compare with Standard Performance characteristics are: En = 400 kJ, C = 850 mm, Rdymax = 600 kN Rdy0 = 330 kN

All performance characteristics can be modified.

Please advise us of your specific requirements.

troke Calculatio

3 - Requ

Ce = C

+1,83 - 1,35

En (0,027 V + 0,22)

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