Series ZPT/ZPR. Vacuum Pad: Ball Joint Type. Pad diameters: ø10, ø13, ø16, ø20 ø25, ø32, ø40, ø50 ZX ZR ZM ZY ZH ZU ZL ZF ZP ZCU CYV

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1 Pad: all oint Type eries ZPT/ZPR all Pad diameters: ø, ø1, ø, ø,, ø, ø0 joint type ideal for adsorption on slanted work surfaces Z ZR ZM Z Z ZU ZL Z ZP ZU V related eries ZPT: Vertical vacuum entry type eries ZPR: Lateral vacuum entry type One-Touch fitting.9-99

2 Pad: all oint Type eries ZPT/ZPR Pad diameters: ø, ø1, ø, ø,,, ø, ø0 Pad materials: NR, ilicon rubber, Urethane rubber, luoro rubber, onductive NR, onductive silicon rubber eries variations s ZPT eries Vertical vacuum entry ZPR eries Lateral vacuum entry uffer With buffer With buffer Mounting Male thread emale thread uffer mounting (male thread) emale thread uffer mounting (male thread) entry emale thread ual emale thread One-Touch fitting One-Touch fitting One-Touch fitting Page P..9-1 / 2 P..9- / 4 P..9- to 9 P..9- to 9 P..9-1 / 111 P to 11 dsorption is possible even on a slanted surface. Pad diameter uffer stroke uffer stroke ø ø1 ø ø ø ø0 nterchangeable with standard type. mm mm 0mm mm 0mm 1 Rotation ±1 xchangeable at the adapter. Pad materials and characteristics Material tem NR ilicon rubber Urethane rubber luoro rubber onductive NR onductive silicon rubber urometer (± ) Operating temperature range 0 to 1 0 to 0 0 to 60 0 to 0 to 0 to 0 Oil resistance (gasoline) Oil resistance (benzol) lkali resistance : Little or no effect : an be used depending on conditions : Not suitable cid resistance Weather resistance Ozone resistance brasion resistance Water resistance olvent resistance (benzene, toluene) The characteristics shown above represent the general properties of the rubber materials. Pad materials used by M meet material standards, however, even in pad tests similar to material tests, results differ depending upon shape and operating conditions..9-0

3 Vertical ntry eries ZPT Without uffer/male Thread Pad diameter ø 1 ø1 ø ø 2 2 ø 0 ø0 Pad type all joint ow to Order ZPT 2 GN 8 entry M x 0.8 Pad material N NR ilicon rubber U Urethane rubber luoro rubber GN onductive NR G onductive silicon rubber Mounting thread diameter male thread ymbol Thread Pad dia. 8 x 1 M x 1 ø to 14 ø, ø0 ø and larger are manufactured upon receipt of order. Z ZR ZM Z Z ZU ZL Z ZP ZU V related Note) Pads are exclusively ball joint type and are not interchangeable with other pads. tandard pecifications Weight Table (g) entry direction onnection Pad diameter ø to ø, ø0 all joint rotation Pad Types Vertical Mounting entry Male thread emale thread x 1 M x 1 M x 0.8 ±1 Mounting entry (female thread) Pad diameter (male thread) M x 0.8 ø to ø, ø0 x 1 M x 1 24 Pad type Pad diameter Material olour urometer Note NR 0 ilicon rubber White Urethane rubber rown all joint ø, ø1, ø, ø,,, ø, ø0 luoro rubber with green mark onductive NR with 1 white mark 0 onductive silicon rubber with 2 white marks 0 Note: hore urometer scale (±º).9-1

4 eries ZPT Without uffer/male Thread ZPT /1/ --8 (Without uffer/male Thread) ZPT /2/2 -- (Without uffer/male Thread) Width across flats 14 M x 1 M x 0.8 x 1 M x Width across flats Width across flats 2 Width across flats Width across flats imensions imensions ZPT--8 ZPT1--8 ZPT ZPT-- ZPT2-- ZPT ZPT / (Without uffer/male Thread) M x 0.8 Width across flats 21. imensions ZPT ZPT

5 Vertical ntry eries ZPT Without uffer/emale Thread ZPT G ow to Order 01 entry (same as mounting thread) Pad diameter Pad diameter Thread ø ymbol diameter ø to ø, ø0 1 ø1 ø ø 8 M ø ø0 Pad material N NR ilicon rubber U Urethane rubber Pad type all joint GN luoro rubber onductive NR G onductive silicon rubber onnection emale thread ø and larger are manufactured upon receipt of order. Note) Pads are exclusively ball joint type and are not interchangeable with other pads. Z ZR ZM Z Z ZU ZL Z ZP ZU V related tandard pecifications Weight Table (g) entry direction onnection Pad diameter ø to Vertical Mounting/ entry emale thread M M Pad diameter ø to ø, ø0 entry (female thread) M ø, ø0 all joint rotation ±1 Pad Types Pad type Pad diameter Material olour urometer Note NR 0 ilicon rubber White Note: hore urometer scale (±º) all joint ø, ø1, ø, ø,,, ø, ø0 Urethane rubber rown luoro rubber with green mark onductive NR with 1 white mark 0 onductive silicon rubber with 2 white marks 0.9-

6 eries ZPT Without uffer/emale Thread ZPT /1/ - (Without uffer/emale Thread) ZPT /2/0 - /8/01 (Without uffer/emale Thread) Width across flats P N Width across flats 8 M NL Width across flats Width across flats 2 Width across flats imensions imensions N NL P ZPT- ZPT1- ZPT ZPT /0-8/01 (Without uffer/emale Thread) ZPT- ZPT-8 ZPT-01 ZPT2- ZPT2-8 ZPT2-01 ZPT M M M Width across flats P N ZPT2-8 ZPT NL. imensions N NL P ZPT-8 ZPT ZPT0-8 ZPT

7 Vertical ntry eries ZPT With uffer Pad diameter ø 1 ø1 ø ø 2 2 ø 0 ø0 Pad type all joint ow to Order ZPT GN 04 Pad material N NR ilicon rubber U Urethane rubber luoro rubber GN onductive NR G onductive silicon rubber ø and larger are manufactured upon receipt of order. uffer type Without detent K With detent Mounting thread diameter/male thread (Refer to Table 1 for applications.) entry (Refer to Table 1 for applications.) Table 1 entry/mounting thread diameter Mounting thread diameter (male thread) Pad diameter ø to ø0 onnection Thread diameter, M x 1 Piping diameter ymbol 14 emale thread M 01 ø4 tube 04 One-Touch ø6 tube 06 fitting ø8 tube 08 entry uffer stroke ymbol troke Pad diameter ø to ø0 mm mm 0 0mm mm 0 0mm Z ZR ZM Z Z ZU ZL Z ZP ZU V related uffer spring reactive force Pad diameter 0 stroke 1.0N{0.kgf} ø to ø0 2.0N {0.kgf} troke end.0n{0.1kgf}.0n{0.1kgf} Note) Pads are exclusively ball joint type and are not interchangeable with other pads. Pad Types Pad type Pad diameter Material olour urometer Note NR 0 ilicon rubber White Note: hore urometer scale (±º) all joint ø, ø1, ø, ø,,, ø, ø0 Urethane rubber luoro rubber onductive NR rown with green mark with 1 white mark 0 onductive silicon rubber with 2 white marks 0.9-

8 eries ZPT With uffer tandard pecifications entry onnection Pad diameter ø to ø0 all joint rotation Mounting uffer male thread M x 1 Vertical entry emale thread One-Touch fitting ø4 tube M ø6 tube ø6 tube ø8 tube ±1 uffer pecifications Pad diameter Mounting troke pring reactive force etent specifications M x 1,, 0,, 0 ø to ø0,, 0, 0 0 stroke troke end 1.0N {0.kgf}.0N {0.1kgf} 0 stroke troke end 2.0N {0.kgf}.0N {0.1kgf} Without detent (), With detent (K) Weight Table (g) Pad diameter ø to ø, ø0 entry emale thread One-Touch fitting M ø4 tube ø6 tube ø8 tube 19 7 dditional Weight by troke (g) Pad diameter ø to ø troke

9 ZPT /1/ /K -- (With uffer/emale Thread) eries ZPT ZPT /2/2 /K (With uffer/emale Thread) Width across flats 8 M Width across flats 1 M x 1 Width across flats Width across flats 8 Width across flats imensions/mm stroke ZPT-- ZPT1-- 1 ZPT-- dditional dimensions by stroke troke M. 1 Width across flats Width across flats12 Width across flats 1 With a stroke of mm Width across flats 6.2 Z ZR ZM Z Z ZU ZL Z ZP ZU V related Width across flats 7 Width across flats With a stroke of to 0mm imensions/mm stroke ZPT ZPT ZPT dditional dimensions by stroke troke + +. ± ±

10 eries ZPT With uffer ZPT /0 /K (With uffer/emale Thread) ZPT /1/ /K -0- (With uffer/one-touch itting) Width across flats 1 pplicable tube O.. øq 6.2 Width across flats 8 M M x 1 Width across flats 14 Width across flats 8 M Width across flats Width across flats 2. With a stroke of mm Width across flats 1 imensions/mm stroke Q:4 Q:6 K K ZPT ZPT ZPT-0-18 Width across flats dditional dimensions by stroke troke K K. With a stroke of to 0mm imensions/mm stroke ZPT ZPT dditional dimensions by stroke troke + +. ±

11 ZPT /2/2 /K (With uffer/one-touch itting) ZPT /0 /K (With uffer/one-touch itting) eries ZPT pplicable tube O.. øq pplicable tube O.. øq Width across flats P Width across flats P K Width across flats P With a stroke of mm Width across flats pplicable tube O.. øq K Width across flats P With a stroke of mm. pplicable tube O.. øq Z ZR ZM Z Z ZU ZL Z ZP ZU V related K Width across flats 7 Width across flats K Width across flats 7 With a stroke of to 0mm imensions/mm stroke Q: 6 Q: 8 K P K P ZPT ZPT ZPT dditional dimensions by stroke troke Q: 6 Q: 8 K P K P ± With a stroke of to 0mm imensions/mm stroke Q: 6 Q: 8 K P K P ZPT ZPT dditional dimensions by stroke troke Q: 6 Q: 8 K P K P ±

12 Lateral ntry eries ZPR Without uffer/emale Thread ow to Order ZPR G 06 Pad diameter Mounting thread 1 2 ø ø1 ø ø diameter/female thread (Refer to Table 1 for applications.) entry (Refer to Table 1 for applications.) 2 Table 1 entry/mounting thread diameter ø Mounting thread diameter 0 ø0 Pad diameter ø to ø0 Pad type onnection Thread diameter, M M Piping diameter ymbol 8 all joint ø4 tube 04 Pad material One-Touch fitting ø6 tube 06 N NR ø8 tube 08 ilicon rubber U Urethane rubber luoro rubber GN onductive NR G onductive silicon rubber Note) Pads are exclusively ball joint type and are not interchangeable with other pads. ø and larger are manufactured upon receipt of order. entry tandard pecifications Weight Table (g) entry direction onnection Pad diameter ø to ø0 Lateral onnection entry emale thread One-Touch fitting M ø4 tube ø6 tube M ø6 tube ø8 tube ø6 tube ø8 tube Pad diameter ø to ø, ø0 Mounting female thread M M M entry (One-Touch fitting) ø4 tube 18 ø6 tube ø8 tube all joint rotation ±1 Pad Types Pad type all joint Pad diameter ø, ø1, ø, ø,,, ø, ø0 Material olour urometer Note NR 0 ilicon rubber White Urethane rubber rown luoro rubber with green mark onductive NR with 1 white mark 0 onductive silicon rubber with 2 white marks 0 Note: hore urometer scale (±º).9-1

13 ZPR /1/ -0- (Without uffer/emale Thread) ZPR /2/2-0- /8 (Without uffer/emale thread) eries ZPR Width across flats M x 0.8 pplicable tube O.. øq N pplicable tube O.. øq 8 ør Width across flats Width across flats ør Width across flats 2 Z ZR ZM imensions ZPR-0-12 ZPR ZPR imensions by tube diameter Pad diameter Q: 4 Q: 6 R R ZPR /0-0-8 (Without uffer/emale Thread) imensions ZPR-0- ZPR-0-8 ZPR2-0- ZPR2-0-8 ZPR2-0- ZPR imensions by tube diameter Pad diameter Q: 6 Q: 8 ø to R R N M M M Z Z ZU ZL Z ZP ZU V related N pplicable tube O.. øq ør 8. imensions ZPR-0-8 ZPR N 6 imensions by tube diameter Pad diameter Q: 6 Q: 8 ø, ø0 R R

14 Lateral ntry eries ZPR With uffer ow to Order ZPR GN 0 06 Pad diameter ø 1 ø1 ø ø 2 2 ø 0 ø0 Pad type all joint Mounting thread diameter/male thread (Refer to Table 1 for applications.) entry (Refer to Table 1 for applications.) Table 1 entry/mounting thread diameter Mounting thread diameter (male thread) Pad diameter ø to ø0 onnection Thread diameter, M x 1 Piping diameter ymbol 14 One-Touch fitting ø4 tube ø6 tube ø8 tube entry Pad material N NR ilicon rubber U Urethane rubber luoro rubber GN onductive NR G onductive silicon rubber ø and larger are manufactured upon receipt of order. uffer type Without detent K With detent uffer stroke ymbol troke mm mm 0 0mm mm 0 0mm Pad diameter ø to ø0 uffer spring reactive force Pad diameter ø to ø0 0 stroke 1.0N {0.kgf} 2.0N {0.kgf} troke end.0n {0.1kgf}.0N {0.1kgf} Note) Pads are exclusively ball joint type and are not interchangeable with other pads. Pad Types Pad type Pad diameter Material olour urometer Note NR 0 ilicon rubber White Note: hore urometer scale (±º) Urethane rubber rown all joint ø, ø1, ø, ø,,, ø, ø0 luoro rubber with green mark onductive NR with 1 white mark 0 onductive silicon rubber with 2 white marks

15 eries ZPR tandard pecifications entry direction Lateral onnection Mounting Male thread entry One-Touch fitting Pad diameter all joint rotation ø to ø0 M x 1 ±1 ø4 tube ø6 tube ø6 tube ø8 tube Z ZR uffer pecifications ZM Z Pad diameter Mounting troke pring reactive force etent specifications Weight Table M x 1,, 0,, 0 ø to ø0,, 0, 0 0 stroke 1.0N {0.kgf} 0 stroke 2.0N {0.kgf} troke end.0n {0.1kgf} troke end.0n {0.1kgf} Without detent (), With detent (K) (g) Z ZU ZL Z ZP ZU Pad diameter ø4 tube entry One-Touch fitting ø6 tube ø8 tube V related 4 ø to 8 9 ø, ø0 14 dditional Weight by troke (g) Pad diameter troke ø to ø

16 eries ZPR With uffer ZPR /1/ /K-0- (With uffer) M x 1 Width across flats 14 Width across flats pplicable tube O.. øq Width across flats Width across flats 2 imensions/mm stroke ZPR-0- ZPR ZPR Q: 4 Q: 6 R R dditional dimensions by stroke troke ZPR /2/2 /K-0-14 (With uffer) pplicable tube O.. øq Width across flats pplicable tube O.. øq Width across flats ør ør ør With a stroke of mm With a stroke of to 0mm imensions/mm stroke ZPR-0-14 ZPR ZPR Q: 6 Q: 8 R R dditional dimensions by stroke troke ±

17 ZPR /0 /K (With uffer) eries ZPR Z imensions/mm stroke ZPR-0-14 ZPR With a stroke of mm ør pplicable tube O.. øq Q: 6 Q: 8 R R With a stroke of to 0mm 6 ør pplicable tube O.. øq dditional dimensions by stroke troke + ± ZR ZM Z Z ZU ZL Z ZP ZU V related.9-11

18 eries ZPT/ZPR pecific Product Precautions Precautions on esign Warning 1. n cases where the work pieces are heavy or dangerous objects, etc., take measures to address a possible loss of adsorption force (installation of drop prevention guides, etc.). n the case of transportation by vacuum adsorption using vacuum pads, adsorption force is lost when there is a drop in vacuum pressure. urthermore, since vacuum pressure can also deteriorate due to wear and cracking of pads, and vacuum leakage from piping, etc., be certain to perform maintenance on vacuum equipment. election aution 1. The pad materials which can be used differ depending upon the operating environment. n appropriate pad material should be selected. urthermore, since vacuum pads are manufactured for use with industrial products, they should not come into direct contact with medicines or food products, etc. 2. epending upon the weight and shape of the work pieces, the diameter, quantity and shape of pads suitable for use will vary. Use the pad lifting force table for reference. lso, the pads to be selected will differ based upon conditions other than the above, such as the condition of the work piece surface (presence or absence of oil or water), the work piece material and its gas permeability. onfirmation is necessary by actually performing vacuum adsorption on the subject work pieces.. Use a buffer for adsorption on fragile work pieces. The cushioning performed by the buffer is also necessary when there is variation in the height of work pieces. When it is desired to perform further positioning of pads and work pieces, a detent buffer can be used..9-1 election aution 4. The life of the buffer will be reduced if lateral force is applied to the buffer shaft. Note that sometimes a load is applied to the buffer by a piping tube (pulling or pressing, etc. in a lateral direction).. o not apply an impact or large force to a pad when adsorbing a work piece. This will cause deformation, cracking and wear of the pad to be accelerated. The stiffening ribs, etc. should touch lightly, while staying within the pad skirt's deformation range. Positioning should be performed accurately. specially in the case of small diameter pads. 6. When transporting in an upward direction, factors such as acceleration, wind pressure and impact force must be considered in addition to the work piece weight. Use caution particularly when lifting items such as glass plates and circuit boards, because a large force will be applied by wind pressure. When a work piece which is oriented vertically is transported horizontally, large forces are applied by acceleration when movement is started and stopped. urther, in cases where the pad and work piece can slip easily, accelerations and decelerations of horizontal movement should be kept low. 7. When transporting flat shaped work pieces that have large surface areas using multiple pads, care must be taken in arranging the pads, giving consideration to balance of the work pieces. Maintenance aution 1. Perform pad maintenance regularly. ince pads are essentially rubber, deterioration is unavoidable. The rate of deterioration depends upon factors such as conditions of use, environment and temperature. Regular maintenance should be performed. f any damage, splitting, cracking or abrasion has occured in a pad which appears to be harmful, replace it immediately. lso, take care not to damage the outside of the pad. eteriorated pad Replacement Replacement of Pads aution New pad Pad diameter: ø to 1. nsert a hexagon wrench from the bottom of the pad, loosen the screw and remove the old pad from the adapter. 2. Place a new pad on the adapter, and after confirming that the O-ring is in place, retighten dapter 1 the screw with the Pad hexagon wrench. Pad diameter: ø, ø0 2 exagon wrench O-ring on inside 1. Pull the lock ring upward, and after lifting it to the adapter, remove the old pad by pulling it downward. 2. While holding the lock ring in the raised position, place a new pad onto the adapter. Lock ring. onfirm that dapter the pad is securely in 1 place, and then return 2 the lock ring Pad to its original position.

19 eries ZPT/ZPR omponents ZPT eries ZPR eries Pad diameter: ø to Pad diameter: ø to Z ZR dapter 4 uffer dapter 4 uffer ZM Z Z ZU ZL 1 Pad 1 Pad Z ZP With buffer With buffer ZU Pad diameter: ø, ø0 Pad diameter: ø, ø0 V related 4 uffer 4 uffer dapter dapter 2Lock ring 2 Lock ring 1 Pad 1 Pad With buffer With buffer Parts list No. escription Material Note Pad Lock ring dapter uffer dapter NR, ilicon rubber, Urethane rubber, luoro rubber onductive NR, onductive silicon rubber luminium rass, U rass rass, U, PT lectroless nickel plated lectroless nickel plated lectroless nickel plated.9-117

20 eries ZPT/ZPR Replacement Parts Pad Unit Lock Ring Unit ow to Order ZP GN ow to Order ZPL Pad diameter ø 1 ø1 ø ø 2 2 ø 0 ø0 Pad type all joint Pad material N NR ilicon rubber U Urethane rubber luoro rubber GN onductive NR G onductive silicon rubber ø and larger are manufactured upon receipt of order. imensions b or ball joint pad (ø, ø0) uffer Mounting Nut Note) Pads are exclusively ball joint type and are not interchangeable with other pads. imensions all joint type: ø to ø N-01 N-01 Pad diameter ø to ø0 d M x ø all joint type: ø, ø0 ø ø ZP ZP1 ZP ZP ZP2 ZP2 ZP ZP

21 eries ZPT/ZPR Pad election The pad diameter is found by means of a pad lift calculation. The calculated value should be used for reference and confirmed by actual adsorption tests when necessary. n the lift calculation, consideration should be given to the weight of the work piece, forces due to acceleration during movement (lifting, stopping, turning, etc.) and a sufficient extra margin should be allowed. margin should also be allowed when determining the number and arrangement of pads. The theoretical lifting force of a pad can be found by calculation or from the theoretical lifting force table. alculation 1 W = P x x 0.1 x t P' 1 (W' = x 1.0 x x ) 760 t Theorectical Lifting orce Table Pad diameter : Pad area cm² 8 {68} 80 {600} 7 {6} 70 {2} pressure kpa {mmg} 6 {488} 60 {} {41} 0 {7} 4 {8} {00} inding the Theoretical Lifting orce W : Lifting force (N) W' : Lifting force (kgf) Pads P : pressure (kpa) P' : pressure (mmg) : Pad area (cm²) t : afety factor orizontal lifting: 4 or more Vertical lifting: 8 or more The theoretical lifting force (not including the safety factor) is found from the pad diameter and vacuum pressure. The required lifting force is then Lifting force = Theoretical lifting force t found by dividing the theoretical lifting force by the safety factor. P' 1. Theoretical lifting force table (Theoretical lifting force = P x x 0.1 {Theoretical lifting force = x x 1.0}) ø {0.680} 6.28 {0.6}.89 {0.601}.0 {0.61}. {0.} 4.71 {0.480} 4.2 {0.441}.9 {0.1}. {0.60}.14 {0.} ø {1.1}.6 {1.08} 9.98 {1.02} 9.1 {0.949} 8.6 {0.882} 7.98 {0.814} 7.2 {0.746} 6.6 {0.678}.99 {0.611}.2 {0.42} ø {1.74}.1 {1.64} 1.1 {1.4} 14.1 {1.44} 1.1 {1.4} 12.1 {1.2} 11.1 {1.1}.1 {1.0} 9.0 {0.92} 8.04 {0.8} ø {2.72} 2.1 {2.6} 2.6 {2.41} 22.0 {2.24}.4 {2.08} 18.8 {1.92} 17. {1.76} 1.7 {1.60} 14.1 {1.44} 12.6 {1.28} W orizontal lifting {4.2} 9. {4.01} 6.8 {.7} 4.4 {.1} 1.9 {.2} 29. {.01} 27.0 {2.7} 24.6 {2.1} 22.1 {2.2} 19.6 {2.00} 760 Vertical This type of application (should basically be avoided.) {6.96} 64. {6.6} 60. {6.1} 6. {.74} 2. {.} 48.2 {4.92} 44.2 {4.1}.2 {4.} 6.2 {.69} 2.2 {.28} W ø {.9} 1 {.} 94. {9.64} 88.2 {8.99} 81.9 {8.} 7.6 {7.71} 69. {7.07} 6.0 {6.42} 6.7 {.78} 0.4 {.14} Unit: N(kgf) ø {17.0} 17 {.0} 147 {1.0} 17 {14.0} 127 {1.0} 118 {12.0} 8 {11.0} 98.0 {.0} 88.2 {8.99} 78.4 {7.99} Z ZR ZM Z Z ZU ZL Z ZP ZU V related aution 1. n cases such as those in which a flat item having a large surface area is carried by multiple pads, balance must be considered when determining the pad arrangement. dditionally, supplementary devices (for example, drop prevention guides) should be installed as necessary to prevent dropping of work pieces. Pad rop prevention guides.9-119

22 eries ZPT/ZPR ata alculation inding the Pad iameter pad diameter which allows for a safety factor based upon the work piece lifting method (horizontal or vertical), can be selected by using the calculation formula or the selection graphs (graphs 1 and 2 below). 4 ø =.14 x 760 P' x 1.0 x W' ( n ) x t x 00 ø = 4.14 x 1 P x W n x t x 00 election Graphs ø : Pad diameter W' : Lifting force (kgf) Pads n : Number of pads per work piece W : Lifting force (N) P : pressure (kpa) P' : pressure (mmg) t : afety factor orizontal lifting: 4 or more Vertical lifting: 8 or more W W orizontal lifting Vertical lifting This type of application (should basically be avoided.) fter establishing the work piece weight, number of pads to be used and the vacuum pressure when adsorbing the work piece, the pad diameters for horizontal lifting and vertical lifting can be found by means of selection graphs 1 and 2. election graph 1 Pad diameter selection graph by lifting force orizontal lifting (ø to ø0) election graph 2 Pad diameter selection graph by lifting force Vertical lifting (ø to ø0) Pad diameter kPa 70kPa 60kPa 0kPa kpa Pad diameter kPa 70kPa 60kPa 0kPa kpa Lifting force (N) Lifting force (N) ow to read the graphs xample: Work piece weight 1kg (lifting force: 9.8N) : onditions/number of pads ; pcs. pressure 60kPa (mmg) orizontal lifting <election procedure> rom the conditions at the left, the lifting force per pad: 9.8N pcs. = 2N, and for horizontal lifting, selection is made from graph 1. Then, extending the intersection point of the lifting force 2N and the vacuum pressure 60kPa to the left, a pad diameter of 1mm is obtained. Therefore, a pad diameter of 1mm or greater should be selected..9-1