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Example 25Inclined Plane – Moving Load Propelled Down by a CylinderD (Cyl. Dia.) = 2.5 in.PSI = 80V = 5 ft./sec.W = 500 lbs.A = Angle of incline = 15ºS = 2 in. *C = 100 / hr.E 1= .2WV² = .2 x 500 x (5)² = 2,500 in.-lbs.F = .78 x D² x PSI = 390 lbs.E 2= (F +(W x SinA)) x S =(390 + (500 x .26)) x 2 = 1,040 in.-lbs.E 3= E 1+ E 2= 2,500 + 1,040 = 3,540 in.-lbs.E 4= E 3x C = 3,540 x 100 = 354,000 in.-lbs./hr.WE = E 3/ [.2VS²] = 3,540 / [.2(5)²] = 708 lbs.Model Selection: SALD ¾ x 2Example 26Inclined Plane – Moving Load Propelled Up by a CylinderD (Cyl. Dia.) = 2.5 in.PSI = 80V = 5 ft./sec.W = 300 lbs.A = Angle of incline = 15ºS = 1 in. *C = 100 / hr.E 1= .2WV² = .2 x 300 x (5)² = 1,500 in.-lbs.F = .78 x D² x PSI = 390 lbs.E 2= (F - (W x SinA)) x S = (390 - (300 x .26)) x 1 = 312 in.-lbs.E 3= E 1+ E 2= 1,500 + 312 = 1,812 in.-lbs.E 4= E 3x C = 1,812 x 100 = 181,200 in.-lbs./hr.WE = E 3/ [.2VS²] = 1,812 / [.2(5)²] = 362 lbs.Model Selection: SALD ¾ x 1*Note: These items will vary with individual applications and were selected for illustration purposes only.EnertrolsSize and 3D Solid Model CAD FilesEnertrols sizing program, EnertrolsSize, patterned inthe spreadsheet format, enables you to select the properindustrial shock absorber or elastomeric bumper for yourapplication.The program is available on CD-ROM and soon willbe available for downloading from the Enertrols website.To receive a CD-ROM simply email Enertrols direct atcustomerservice@enertrols.com.If you prefer, Enertrols will size your application for you.There is no charge for this service. Contact EnertrolsApplications Department at 734-595-4500.3D solid model CAD file drawings are availablefor downloading by visiting the Enertrols website atwww.enertrols.com.1923435 Industrial Park Dr., Farmington Hills, MI 48335 • p: 734-595-4500f: 734-595-6410 • customerservice@enertrols.com • www.enertrols.com
Model Rating ChartsShock Absorber Selection Suggestions...After determining the energy requirements of your applicationusing the formulas an examples on the previous pages, select the required model and stroke size from the charts below.Enertrols recommends that you select a model with 20% more capacity than your calculations indicate necessary.This extra capacity allows for changes if the weight, velocity or cycle rates increase in the future.Enertrols also recommends using the longest stroke possible when calculating. This will provide maximum decelerationperformance with the lowest impact forces. If you prefer, an Enertrols application engineer will size your applicationfor you and recommend the correct shock absorber for your linear deceleration requirement. There is no cost forthis service.Self-Compensating Sub-Miniature ModelsModel NumberSM 9M-1SM 9M-2SM 10ELSM 10EHSM 10MLSM 10MHSM 25LSM 25SM 25HSM 30M1SM 30M2SM 30M3SM 75-1SM 75-2SM 75-3Stroke-Inches1 inch = 25.4 mmE3 Max. Energy/Cycleinch lbs1 in lb = .11 Nm0.20 9.00.200.2011.011.04.07.00.26 200.32 310.40 75WE (lbs.)Effective Weightlbs, 1 lb = .45 kg1.35 - 7.01.75 - 9.00.75 - 6.01.5-110.75 - 6.01.5 -111.5 - 5.04 -1210 -301.0 - 4.303.97 - 11.9011.02 - 33.070.5 - 2.52 - 146 - 80Self-Compensating Miniature ModelsModel NumberSNALD 150SNALD 150HSNALD 150H2SNALD 225SNALD 225HSNALD 225H2SNALD 450SNALD 450HSNALD 450H2SNALD 600SNALD 600HSNALD 600H2SNALD 1/2x1-S-1SNALD 1/2x1-S-2SNALD 1/2x1-S-3SNALD 1/2x1-S-4SNALD 1/2x2-S-1SNALD 1/2x2-S-2SNALD 1/2x2-S-3SNALD 1/2x2-S-4Stroke-Inches1 inch = 25.4 mmE3 Max. Energy/Cycleinch lbs1 in lb = .11 Nm0.50 1500.50 2251.00 4501.00 6000.94 1,3501.94 2,700Adjustable Miniature ModelsModel NumberStroke-Inches1 inch = 25.4 mmE3 Max. Energy/Cycleinch lbs1 in lb = .11 NmWE (lbs.)Effective Weightlbs, 1 lb = .45 kg2 - 2219 -190150 - 4505 - 5550 - 500400 - 2,0005 - 3520 - 13080 - 50020 - 300250 - 2,500880 - 5,00020 - 8068 - 272230 - 920780 - 3,12040 - 160136 - 544460 - 1,8401,560 - 6,240WE (lbs.)Effective Weightlbs, 1 lb = .45 kgE4 Max. Energy/Hour, in lbs/hour1 in lb/hour = .11 Nm/hourSelf Contained A/O Tank A/O Re-circulating18,000 N/A N/A35,000 N/A N/A35,000 N/A N/A200,000 N/A N/A50,000 N/A N/A250,000 N/A N/AE4 Max. Energy/Hour, in lbs/hour1 in lb/hour = .11 Nm/hourSelf Contained A/O Tank A/O Re-circulating300,000 N/A N/A400,000 N/A N/A600,000 N/A N/A600,000 N/A N/A750,000 N/A N/A870,000 N/A N/AE4 Max. Energy/Hour, in lbs/hour1 in lb/hour = .11 Nm/hourSelf Contained A/O Tank A/O Re-circulatingSA 30M 0.32 31 0.5 - 31.0 50,000 N/A N/ASA 35 0.40 35 13 - 125 53,000 N/A N/ASA 50M 0.28 50 10 - 45 120,000 N/A N/ASA 150 0.50 200 2 - 240 300,000 N/A N/ASA 1/4x1/2-S 0.50 200 2 - 240 400,000 N/A N/ASALD 3/8x1-S 1.00 600 10 - 1,200 600,000 N/A N/ASALD 1/2x1-S 1.00 1,500 10 - 3,000 750,000 N/A N/ASALD 1/2x2-S 2.00 3,000 21 - 6,000 870,000 N/A N/A23435 Industrial Park Dr., Farmington Hills, MI 48335 • p: 734-595-4500f: 734-595-6410 • customerservice@enertrols.com • www.enertrols.com20General Information
Page 3: Any mechanism that moves and that m
Page 8 and 9: Construction & Design FeaturesMinia
Page 10 and 11: Standard Shock AbsorbersGold Line
Page 12 and 13: Accessories & Special Application S
Page 14 and 15: Selecting the Correct Type of Shock
Page 16: Selecting the Correct Size Shock Ab
Page 19 and 20: Example 9Horizontal-Moving Load-Rot
Page 21 and 22: Example 16Vertical-Rotating Beam Dr
Page 23: Example 22Vertical Rotating Arm - C
Page 27 and 28: Self-Compensating ECA ModelsModel N
Page 29 and 30: Construction and Parts Descriptions
Page 31 and 32: Installation Recommendations and Ti
Page 33 and 34: Additional Enertrols ProductsShock
Page 35 and 36: SM 9 to SM 75MFSub-Miniature Shock
Page 37 and 38: SNALD 150 to 600Miniature Shock Abs
Page 39 and 40: SNALD 1/2 Bore x 1, 2"Miniature Sho
Page 41 and 42: SA 30 to 150 & 1/4" BoreMiniature S
Page 43 and 44: SALD 3/8 Bore x 1"Miniature Shock A
Page 45 and 46: SALD 1/2 Bore x 1, 2"Miniature Shoc
Page 47 and 48: Industrial Shock AbsorbersWeartec P
Page 49 and 50: SNALD 33, 45 & 64 SeriesOrdering In
Page 51 and 52: SNALD 33 SeriesMid-Size Shock Absor
Page 57 and 58: AccessoriesSNALD Mid-Size 33, 45 &
Page 59 and 60: SALD ½ x 1, 2-P, SALD ¾ x 1, 2, 3
Page 61 and 62: Gold Line ® & Silverline ® Primar
Page 63 and 64: Retention Kit for MSC Installations
Page 65 and 66: SALD 3/4, 1-1/8,1-1/2, 2-1/4Gold Li
Page 67 and 68: Positive Stop Collar (-PSC) for Fix
Page 69 and 70: SILVERLINE ® SeriesDimensions in i
Page 71 and 72: High Precision Metric (HPM) Series
Page 73 and 74: EA 2 to EA3Heavy Industrial Shock A
Page 75 and 76:
ECA and EA 2", 3" Bore SeriesECA Se
Page 77 and 78:
ECA and EA 2", 3" Bore SeriesECA Se
Page 79 and 80:
ECA 4" Bore SeriesHeavy Duty Models
Page 81 and 82:
Stacker Crane Shock Absorbers ESCS-
Page 83 and 84:
Stacker Crane Shock Absorbers ESCS-
Page 85 and 86:
Industrial Crane Bumper Shocks ECB-
Page 87 and 88:
Industrial Crane Bumper Shocks ECB-
Page 89 and 90:
Dimensions in inches and (mm)ABCD0.
Page 91 and 92:
AR0.27(R7)BC0.32(8.1)0.55(14)M8 x 1
Page 93 and 94:
Mounting Brackets for Hydraulic Dam
Page 95 and 96:
EDVC Velocity & Feed ControllersC51
Page 97 and 98:
EVC Velocity & Feed Controllers wit
Page 99:
Stocking DistributorsUSA, Canada an
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