Jarret Series. BC1N, BC5, LR Series. Jarret Series. Overview Tel.: Fax:

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1 JT Jarret Series BC1N, BC5, LR Series Overview Jarret Series LR Series BC5 Series BC1GN Series BC1ZN Series Spring The design of Jarret Industrial Shock Absorber utilizes the unique compression and shear characteristics of specially formulated silicone elastomers. These characteristics allow the energy absorption and return spring functions to be combined into a single unit without the need for an additional gas or mechanical spring stroke return mechanism. Applications: Shock protection for all types of industries including: Defense, Automobile, Railroad, Materials Handling, Marine, Pulp/Paper, Metal Producing and Processing. Advantages: - Simple design - High reliability - High damping coefficient - Low sensitivity to temperature variances 93 mail: info@enidine.eu Tel.: Fax:

2 Jarret Series BC1N, BC5, LR Series Visco-elastic Technology JT Impact Plate Sweeper Reservoir Visco-elastic Fluid Piston xternal Guide Visco-elastic Technology Mounting Flange Piston Retainer Visco-elastic technology makes use of the fundamental properties of specially formulated Jarret visco-elastic fluids. Compressibility: Preloaded spring function - F = F 0 + KX Viscosity: Shock absorber function - F = F 0 + KX + CV α with α between 0,1 and 0,4 The two functions can be used separately or in combination, in the same product: Preloaded Spring: Spring Function Only Hysteresis of between 5% and 10% Reduced weight and space requirement Force/stroke characteristic is independent of actuation speed Preloaded Spring Shock Absorbers: Combine Spring and Shock Absorber Functions Dissipate between 30% and 100% of energy Force/stroke characteristics remain relatively unchanged between -10 C and + 70 C Shock Absorber Without Spring Return: Shock Absorbing Function Only Dampening devices Blocking devices mail: info@enidine.eu Tel.: Fax:

3 JT Jarret Shock Absorbers BC1N Series BC1ZN BC1GN Series Technical Data BC1N Series D5 D6 4 Holes D7 L4 L2 L1 L6 Stroke D1 D3 L2 L1 L3 Stroke D1 D4 Rear flange mounting - Fa Threaded body mounting - Fc L5 nergy Catalog No./ Capacity Stroke xtension Compression Rdy0 Model kj mm kn kn kn Reaction Force kn BC1ZN 0,1 12 0,94 5, BC1BN 0, ,5 14, BC1DN 1,5 35 5,2 28, BC1N 3,4 45 7,8 43, BC1FN ,6 76, BC1GN ,0 130, Catalog No./ L1 L2 L3 L4 L5 L6 R1 D1 D2 D3 D4 D5 D6 D7 Mass Model mm mm mm mm mm mm mm mm mm mm mm mm mm mm kg BC1ZN M25 x 1, ,3 BC1BN M35 x 1, ,7 BC1BN-M M40 x 1, ,8 BC1DN M50 x 1, ,9 BC1DN M50 x 1, BC1DN-M M60 x BC1N R M75 x BC1FN R ,5 M90 x ,5 BC1GN R M110 x mail: info@enidine.eu Tel.: Fax:

4 Jarret Shock Absorbers BC1N Series BC1ZN BC1GN Series 1 - Selection Chart Application Worksheet 5 - Calculation of ffective Reaction Rdy e JT Rdy - Rdy0 e = x Ce + Rdy0 (0,1V + 0,8) C 6 - Application xample Given data: ffective mass = 15 t, ffective speed = 0,8 m/s Impact frequency: 25 impacts/hour BC1N Series 1: BC1FN Selected Based On Impact velocity : 2 m/s Operating temperature : - 20 C to + 40 C Surface protection : lectrolytic zinc Dynamic performance diagram Rdy0 Force kn 2: nergy dissipated per impact is: 4,8 kj 3: Allowable impact frequency < 20x7/4,8 4: Required stroke is 49 mm 4,8 Ce = 60 7 (0,03 x 0,8 + 0,24) +1,36-1,17 5: With an Rdy e = [(150-90) x 49/60) + 90)] x (0,1 x 0,8 + 0,8) = 122 kn Symbols: n = nergy Capacity C = imum Stroke Rdy = Dynamic Reaction 2 - nergy Calculation = 1 M e V 2 e Allowable Impact Frequency F < 20 x n Impacts/hour 4 - ffective Stroke Calculation Stroke mm Compare with standard mechanical characteristics: n = 7 kj, C = 60mm, Rdy0 = 90 kn and = 150 kn All performance characteristics can be modified. Please advise us of your specific requirements. Ce = C +1,36-1,17 n (0,03 V + 0,24) mail: info@enidine.eu Tel.: Fax:

5 JT Jarret Shock Absorbers BC5 Series BC5A BC5 Series Technical Data BC5 Series Rear Flange Mount - Fa 4 holes ø D5 ø D2 ø D1 L4 L5 L2 Stroke C L6 ø D3 ø D4 ø D2 L8 L7 L5 L4 L3 Front Flange Mount - Fc nergy Catalog No./ Capacity Stroke xtension Compression Rdy0 Model kj mm kn kn kn Reaction Force kn BC5A ,5 140, BC5B ,0 221, BC5C ,0 328, BC5D ,5 380, BC , Catalog No./ L1 L2 L3 L4 L5 L6 L7 L8 D1 D2 D3 D4 D5 Mass Model mm mm mm mm mm mm mm mm mm mm mm mm mm kg BC5A BC5B BC5C BC5D BC Impact Speed: BC5 Series shock absorbers are designed for impact velocities of up to 4 m/s Higher impact velocities require custom modification mail: info@enidine.eu Tel.: Fax:

6 Jarret Shock Absorbers BC5 Series BC5A BC5 Series Application Worksheet JT Based On Impact velocity : 2 m/s Operating temperature : - 20 C to + 40 C Surface protection : lectrolytic zinc Dynamic performance diagram Rdy0 Force kn 4 - Calculation of ffective Reaction Rdy e Rdy - Rdy0 e = x Ce + Rdy0 (0,1V + 0,8) C 5 - Application xample Data: Two shock absorbers in series, ffective mass m =300 t, Impact speed v = 1,2 m/s (which is an impact of 0,6 m/s on each shock absorber), Impact frequency = 15 impacts/hour, imum allowable structural load 1000 kn BC5 Series Symbols: n = nergy Capacity C = imum Stroke Rdy = Dynamic Reaction Stroke mm 1 1 1: = ( mv 2 2 ) - Selection BC5-2 2: imum allowable impact frequency is 15 x 21 impacts/hour. Therefore 15 impacts/hour is acceptable. 3: Required stroke is 167 mm nergy Calculation = 1 M e V 2 e Allowable Impact Frequency F < 15 x n Impacts/hour 3 - ffective Stroke Calculation Ce = C +1,36-1,17 n (0,03 V + 0,24) Ce = 180 x (0,03 x 0,6 + 0,24) +1,36-1,17 = 156 mm 156 4: Rdye = ( ) x ( 0,1x 0,6 + 0,8) 180 = 893 kn < 1000 kn, maximum allowable impact frequency Compare with standard mechanical characteristics for each shock absorber: n = 150 kj, C = 180 mm, Rdy0 = 640 kn and Rdy max = 1100 kn All performance characteristics can be modified. Please advise us of your specific requirements. mail: info@enidine.eu Tel.: Fax:

7 JT Jarret Shock Absorbers XLR Series XLR6-150 XLR-800 Series Technical Data L7 L8 LR Series ø D1 L4 L5 L2 L1 Stroke L3 ø D3 ø D4 L6 4 holes ø D5 ø D1 XLR Series - Front Flange Mount- Fc nergy Catalog No./ Capacity Stroke xtension Compression Rdy0 Model kj mm kn kn kn Reaction Force kn XLR ,9 20, XLR ,3 38, XLR ,6 30, XLR ,4 74, XLR ,1 51, XLR ,7 130, XLR ,9 83, XLR ,0 162, XLR ,6 132, XLR ,2 152, Impact Speed: Types XLR and BCLR Series shock absorbers are designed for impact velocities of up to 2 m/s Higher impact velocities require custom modification. Catalog No./ L1 L2 L3 L4 L5 L6 L7 L8 D1 D2 D3 D4 D5 Mass Model mm mm mm mm mm mm mm mm mm mm mm mm mm kg XLR ,2 XLR XLR XLR XLR XLR XLR XLR XLR XLR Rear Flange Mounting - Fa on Request mail: info@enidine.eu Tel.: Fax:

8 Jarret Shock Absorbers XLR Series XLR6-150 XLR-800 Series Application Worksheet Based On 4 - Calculation of ffective Reaction Rdy e Impact velocity : 2 m/s Operating temperature : - 20 C to + 40 C Rdy - Rdy0 e = x Ce + Rdy0 (0,1V + 0,8) Surface protection : lectrolytic zinc & Painting C Dynamic performance diagram Rdy0 Force kn 5 - Application xample Data: ffective mass = 30 t ffective impact speed = 2,2 m/s imum allowable structural force: 350 kn Impact Frequency = 8/hr JT LR Series Symbols: n = nergy Capacity C = imum Stroke Rdy = Dynamic Reaction 1 - nergy Calculation 1 = M e V 2 2 e 2 - Allowable Impact Frequency F < 8 x n Impacts/hour 3 - Required Stroke Calculation Stroke mm 1: XLR selected 2: nergy dissipated/impact is 72,6 kj 3: imum allowable impact frequency 8 x 100 / 72,6 = 11 (Therefore 8 impacts/hr is acceptable) 4: ffective stroke: 72,6 Ce = 400 x + 1,83-1, (0,027 x 2,2 + 0,22) Ce = 301,8mm 5: Rdye = 284,4 (0,1 x 2,2 + 0,8) = 290,1 kn Ce = C +1,83-1,35 n (0,027 V + 0,22) (which is less than maximum allowable reaction force of 350 kn) Compare with standard performance characteristics: n = 100 kj, C = 400 mm, = 320 kn Rdy0 = 175 kn All performance characteristics can be modified. Please advise us of your specific requirements. mail: info@enidine.eu Tel.: Fax:

9 JT Jarret Shock Absorbers BCLR Series BCLR-100 BCLR-1000 Series Technical Data L7 L8 LR Series ø D1 4 holes ø D5 L4 L5 Stroke L2 L3 L1 BCLR Series - Front Flange Mount - Fc ø D3 ø D4 L6 nergy Catalog No./ Capacity Stroke xtension Compression Rdy0 Model kj mm kn kn kn Reaction Force kn BCLR ,0 161, BCLR ,5 201, BCLR-220S ,0 270, BCLR ,0 253, BCLR ,6 307, BCLR ,5 351, BCLR ,2 441, BCLR ,0 534, Impact Speed: Types XLR and BCLR Series shock absorbers are designed for impact velocities of up to 2 m/s Higher impact velocities require custom modification. Catalog No./ L1 L2 L3 L4 L5 L6 L7 L8 D1 D2 D3 D4 D5 Mass Model mm mm mm mm mm mm mm mm mm mm mm mm mm kg BCLR BCLR BCLR-220S BCLR BCLR BCLR BCLR BCLR Rear Flange Mounting - Fa on Request mail: info@enidine.eu Tel.: Fax:

10 Jarret Shock Absorbers BCLR Series BCLR-100 BCLR-1000 Series Application Worksheet Based On 4 - Calculation of ffective Reaction Rdy e Impact velocity : 2 m/s Operating temperature : - 20 C to + 40 C Rdy - Rdy0 e = x Ce + Rdy0 (0,1V + 0,8) Surface protection : lectrolytic zinc & Painting C Dynamic performance diagram Rdy0 Force kn 5 - Application xample Data: ffective mass = 75 t ffective impact speed = 2,7 m/s imum allowable structural force: 650 kn Impact Frequency = 8/hr JT LR Series Symbols: n = nergy Capacity C = imum Stroke Rdy = Dynamic Reaction 1 - nergy Calculation 1 = M e V 2 2 e 2 - Allowable Impact Frequency F < 8 x n Impacts/hour 3 - Required Stroke Calculation Stroke mm 1: BCLR400 selected 2: nergy dissipated/impact is 274 kj 3: imum allowable impact frequency 8 x 400 / 274 = 12 (Therefore 8 impacts/hr is acceptable) 4: ffective stroke: 274 Ce = 850 x + 1,83-1, (0,027 x 2,7 + 0,22) Ce = 587mm 5: Rdye = 520 (0,1 x 2,7 + 0,8) = 556 kn Ce = C +1,83-1,35 n (0,027 V + 0,22) (which is less than maximum allowable reaction force of 650 kn) Compare with Standard Performance characteristics are: n = 400 kj, C = 850 mm, = 600 kn Rdy0 = 330 kn All performance characteristics can be modified. Please advise us of your specific requirements. mail: info@enidine.eu Tel.: Fax: