hydraulic power clamps

hydraulic power clamps Table of ontents lick Page # View ydraulic lamping Page M-Y-# ydraulic lamping Page M-Y-# 1-21-4 1-21-51 1-21-72 1-211-2 1-211-4 1-211-52 1-211-54 1-212-4 3-4 3-1-S-475 3-1--475 7 3-1-S-11 52-Series 4 3-1--11 8 51-Series 4 3-1-S-24 3-1--24 9 2-11-11 2-12-21 2-13-31 5 3-1-S-4 1 3-1--4 1 31-S-475 31-L-475 31-S-11 31-L-11 31-S-24 31-L-24 31-S-4 31-L-4 11-12 39-11- 13 39-14- M-Y-1

uilding safe hydraulic systems ydraulic Power lamps Safety Safety means paying attention to the smallest details. hastily assembled workholding system can result in a hazardous operator environment. ydraulic workholding is not a generic technique where most anything will work, nor is there one right or best answer for all situations. ach application is different and can be approached in many different ways. ecause of this versatility, there is no rule-of-thumb to follow to guarantee safety. careful balance of knowledge, fixture design and common sense are key to avoiding injuries. Plan your fixture installation with operator safety in mind. y nature, most clamping devices have pinch points. Many times the fixture can be designed to shield the operator from a pinching hazard. Often the placement of the clamping device in the fixture can minimize the gap between the clamp and the workpiece, thus reducing or eliminating the pinch point. Perhaps the clamping control valve or switch can be located such that the operator cannot reach the fixture and the control at the same time. ual palm buttons on electricallyactuated systems serve the same purpose. o not require the operator to hold the workpiece in position during the clamping operation. Make sure that the workpiece is self-supporting and self-locating so that operator hands are out of danger when the hydraulic system is actuated. Often a simple spring plunger is all that is necessary. The lowest pressure rating of any component in the clamping system sets the maximum pressure rating for the entire system. Most hydraulic workholding components are rated at 5, PSI maximum. owever, some components are rated at less than 5, PSI. The maximum pressure is listed on each product page of this catalog. Never exceed this rating. Just having a clamp that is rated at 5, PSI is not enough. very hose, fitting, valve, adapter and tube exposed to pressure must be rated at or above the maximum hydraulic system pressure. Most hardware store fittings are intended only for low pressure plumbing. Never use water pipe fittings or copper tubing and brass fittings for hydraulic service. Use proper tools when bending tubing, and maintain proper minimum bend radii for hoses and tubing. If a hose or tube is ever kinked, replace it. on t risk a rupture. Fluid escaping under high pressure is dangerous. The resulting loss in pressure could release the workpiece from the fixture and cause serious injury and equipment damage by being ejected from the machine or breaking tooling. Tubing and hoses do flex when pressurized. llow for that movement by supporting the fluid lines away from surfaces which could abrade the surface and eventually cause damage. void straight lengths of hose and tubing. bend will allow for this deflection without putting too much stress on the line. ven if proper hydraulic tubing and fittings are specified, be sure to protect them from abuse. omponents damaged from abrasion or accidental dropping of a workpiece will no longer have the strength and safety of the original design. Use proper mounting hardware when installing workholding clamps and other components. lways use the largest bolt available to fit in the mounting hole. In many cases, the recommended cap screw or thread is specified on the product page of this catalog. Sometimes the mounting hardware is included with the component. lways use supplied hardware. Safety means paying attention to the smallest details. M-Y-2

1 Series ydraulic Power lamps ydraulic Threaded ody ylinders Product Overview The single-action, spring-return hydraulic power cylinders are small pistons that can be used singly or combined. They offer tremendous force in a small, easily mounted package that can be used in any attitude and requires only a single inlet port. They are often used grouped together by a common manifold to provide as much force as needed for the operation. For a relatively small volume of oil, they provide exceptional exerting force, and are generally the best choice if stroke lengths can be kept short. Features: Threaded body for easy mounting Small size permits low profile workholding ccessories available for easy mounting vailable in metric or inch sizes (Metric on special request) ardened piston and rod Single-acting for simple plumbing Wide variety of sizes and strokes Pressure capacity up to 5, PSIG, provided piston does not bottom out Technical Information Model no. S Ports Threaded ody Stoke Force at 3, PSIG Oil isplacement ffective rea For lamping Jam Nuts 1-21-4 #2 1/2-2.22 279 lbs..24 cu. in..11 Furnished 1-21-51 #4 3/4-16.31 588 lbs..61 cu. in..196 Furnished 1-21-72 #4 1-12.5 1,326 lbs..221 cu. in..442 Furnished 1-211-2 #4 1 5/16-16.5 2,355 lbs..393 cu. in..785 Optional 1-211-4 #4 1 5/16-16 1. 2,355 lbs..785 cu. in..785 Optional 1-211-52 #4 1 7/8-16.5 5,31 lbs..884 cu. in. 1.767 Optional 1-211-54 #4 1 7/8-16 1. 5,31 lbs. 1.767 cu. in. 1.767 Optional 1-212-4 #4 2 1/2-16 1. 9,423 lbs. 3.142 cu. in. 3.142 Optional M-Y-3

1 Series ydraulic Power lamps ydraulic Threaded ody ylinders Product Overview (PORTING) F (TR) OG J (FML TR) imensions (In Inches) Model no. F G J 1-21-4 1.66 1.41.19.22.44 ex 1/2-2.15 S #2 1-21-51 2.25 1.97.22.31.62 ex 3/4-16.22 S #4 1-21-72 2.56 2.31.31.5.75 ex 1-12.24 S #4 1-211-2 2.63 2.25.13.5 1. ex 1 5/16-16.64 S #4 1/4-2 1-211-4 3.63 3.25.12 1. 1. ex 1 5/16-16.64 S #4 1/4-2 1-211-52 2.94 2.57.13.5 1.5 ex 1 7/8ß-16 1. S #4 5/16-18 1-211-54 4.59 4.22.14 1. 1.5 ex 1 7/8-16 1. S #4 5/16-18 1-212-4 4.13 3.76.13 1. 2. ex 2 1/2-16 1.5 S #4 5/16-18 Series 52 Flange Mount Model no. imensions (In Inches) ø Ø 52-112-16 1 1/8-16 UN 2 1.5.5.22 1.3 52-131-16 1 5/16-16 UN 2 1.69.5.27 1.25 52-137-18 1 3/8-16 UN 2 1.75.5.27 1.34 52-187-16 1 7/8-16 UN 2 2.25 1..34 1.77 52-25-16 2 1/2-16 UN 2 3. 1..34 2.17 Series 51 Jam Nut Model no. imensions (In Inches) 51-112-16 1 1/8-16 UN 2 1.5.31.25.25 51-131-16 1 5/16-16 UN 2 1.688.31.25.25 51-137-18 1 3/8-16 UN 2 1.875.31.25.25 51-187-16 1 7/8-16 UN 2 2.625.38.312.132 51-25-16 2 1/2-16 UN 2 3.25.5.312.312 Ø M-Y-4

2 Series ydraulic Power lamps Thru-ole ydraulic Ram Product Overview y inserting a rod through the hollow piston, these cylinders can be used to push or pull depending on the orientation of the ram. They will actuate a rod of any length or shape and are extremely effective in translating power to a remote location. Greater forces are generated in these thru-hole rams because of their larger piston area. Symbol Features: Larger piston diameter for greater clamping forces ardened steel piston and rod Single-acting for simple plumbing Optional threaded inserts Optional mounting plate (permits mounting ram with a single cap screw) Model no. RM Force at Oil imensions Port I..* 3, PSIG isplacement 2-11-11.38 S #2.38 4,38 lbs..547 cu. in. 2.13 1.88 2.25 2-12-21.5 S #4.5 8,1 lbs. 1.35 cu. in. 3. 2.63 2.88 2-13-31.63 S #4.63 12,66 lbs. 2.51 cu. in. 3.25 3. 3.63 * learance for rod or bolt of given dimension. Maximum input pressure 3,5 PSIG. ccessories ll size thru-hole rams are supplied with a thru-hole insert threaded into the top. Optional threaded inserts, inch or metric, are also available. RM no. Thru-ole Insert (supplied) 2-11-11 75384 2-12-21 75512 2-13-31 75634 Loads Trasmitted by Various iameter Screws olt Size Wrench Length F-lbs. (verage) thru-hole ram easily converts a manual strap clamp into an automatic hydraulic powered clamp. Usually a longer bolt is the only part needed to make this conversion. 1/4 UNF 4. 2,4 lbs. 1/4 UNF 4. 1,92 lbs. 3/8 UNF 5.75 3, lbs. 3/8 UNF 5.75 2,92 lbs. 1/2 UNF 8. 4,2 lbs. 1/2 UNF 8. 3,64 lbs. 5/8 UNF 9. 5,6 lbs. 5/8 UNF 9. 5,6 lbs. 3/4 UNF 9. 4,8 lbs. 3/4 UNF 11. 4,2 lbs. 7/8 UNF 12. 5,4 lbs. To determine how much force is needed to replace a manual clamp, use this chart as a guide. M-Y-5

2 Series ydraulic Power lamps Thru-ole ydraulic Rams Technical Information alculation of Forces Using Straps and Levers Figure #1 When the distance is equal to the distance the force upward from Model 2-11-11 Ram is equal to the downward force on the part. Figure #2 The downward force is equal to the upward force times a ratio of the distance :. xample: = 2, = 4, Force = 1, lbs. Force = Force x = 1, lbs. x 4 2 = 2, lbs. Figure #3 When Force from Model 2-11-11 ollow ore is divided between &, the forces at & are in inverse ratio to the distance & respectively. Force = Force x Force = Force x xample: = 2, = 4, Force = 1, lbs. Force = 1, lbs. x 4 = 666.7 lbs. 6 Force = 1, lbs. x 2 = 333.3 lbs. 6 Power Sources Thru-hole Rams can be powered by automatic pumps, hand pumps, boosters or existing machine hydraulics. Used with automatic pump Used with hand pump Used with booster Multiple Uses Thru-hole Rams can be used to push or pull depending on the position of the ram. Pull Pull Push Pull M-Y-6

3 Series ydraulic Power lamps ydraulic Swing/Pull lamps 475 lb. The STO Threaded ody Swing/Pull lamps are available in both single-acting and double-acting versions. They incorporate the latest hydraulic swing clamp technology. The top port design allows easy access for plumbing connections. They are available with 9 left or right hand rotation, or with guided straight pull. The breather port on single-acting models may be replaced with tubing for remote venting. The optional arms clamp securely to the piston rod to reduce fatigue and deflection. rms may be easily modified or custom arms may be substituted. 3-1-S-475 Features: dvanced seals and wipers utilize a special, highly wear-resistant construction for long cycle life and 5, PSI operation Triple track piston rod design for field adjustable swing direction ardened and hard chrome plated piston rod for increased strength and wear resistance dvanced metal treated body for superior wear and corrosion resistance MRO interchange design Straight pull capacity 6 lbs. at 5, PSI max Port S 5 Port 25 T U 3-1--475 6 L lamping Force (Lbs.) 5 4 3 2 1 For 475 lb. Swing/Pull lamp rms see Page M-Y-11 Q J K N R 1 2 3 4 5 ydraulic Pressure (PSI) M P Performance G F With 31-L-475 rm (3.25" long) With -31-S-475 rm (1.22" long) Straight Pull at. no. 3-1-S-475 (-X) 3-1--475 (-X) Oper. Single- cting oubleacting Swing irection Left and (ounter lockwise) Right and (lockwise) Straight Pull *Force ff. rea (sq. In.) Oil ap. (cu. In.) (lbs.) lamp Unclamp lamp Unclamp 475.12.8.24.15 Max Oil Flow in3/m in 12 Ordering Notes: Left hand swing (ccw) is standard no suffix dd R suffix for right hand swing dd S suffix for straight guided pull at. no. Total lamping 3-1-S-475.65.21.59 3-1--475.65.32.59 lamp Port Unclamp Port F G J K L M N P Q R S T U S-2 S-2 1.929 2.86 3.7 4.429.8 M6x1.157.393 1-1/8-16UN 4.96.495 1.3 1.55.61 This item is available upon request NOT: *With 1.22 long arm at 5, PSI maximum operating pressure. o not pressurize single-acting only See page M-Y-11 for arms, accessories and custom arm mounting M-Y-7

3 Series ydraulic Power lamps ydraulic Swing/Pull lamps 1,1lb. The STO Threaded ody Swing/Pull lamps are available in both single-acting and double-acting versions. They incorporate the latest hydraulic swing clamp technology. The top port design allows easy access for plumbing connections. They are available with 9 left or right hand rotation, or with guided straight pull. The breather port on single-acting models may be replaced with tubing for remote venting. The optional arms clamp securely to the piston rod to reduce fatigue and deflection. rms may be easily modified or custom arms may be substituted. 3-1-S-11 Features: dvanced seals and wipers utilize a special, highly wear-resistant construction for long cycle life and 5, PSI operation Triple track piston rod design for field adjustable swing direction ardened and hard chrome plated piston rod for increased strength and wear resistance dvanced metal treated body for superior wear and corrosion resistance MRO interchange design Straight pull capacity 1,4 lbs. at 5, PSI max 16 Port S 5 Port 3-1--11 T U 25 L lamping Force (Lbs.) 14 12 8 4 1 2 3 4 5 ydraulic Pressure (PSI) Performance With 31-L-11 rm (5.31" long) With 31-S-11 rm (1.89" long) Straight Pull For 1,1 lb. Swing/Pull lamp rms see Page M-Y-12 Q J K M G F N P R at. no. 3-1-S-1 (-X) Oper. Single- cting 3-1--1 (-X) oubleacting Swing irection Left and (ounter lockwise) Right and (lockwise) Straight Pull *Force ff. rea (sq. In.) Oil ap. (cu. In.) (lbs.) lamp Unclamp lamp Unclamp 11.28.25.59.52 Max Oil Flow in3/m in 25 Ordering Notes: Left hand swing (ccw) is standard no suffix dd R suffix for right hand swing dd S suffix for straight guided pull at. no. 3-1-S-11 3-1--11 Total lamping lamp Port Unclamp Port F G J K L M N P Q R S T U.89.39.6 S-4 S-4 2.4 2.6 3.58 5.35.94 M8 x 1-3/8-.196.629 1.25 18UN 5.965.4 1.5 1.87.75 This item is available upon request NOT: *With 1.89 long arm at 5, PSI maximum operating pressure. o not pressurize single-acting only See page M-Y-12 for arms, accessories and custom arm mounting M-Y-8

3 Series ydraulic Power lamps ydraulic Swing/Pull lamps 2,4 lb. The STO Threaded ody Swing/Pull lamps are available in both single-acting and double-acting versions. They incorporate the latest hydraulic swing clamp technology. The top port design allows easy access for plumbing connections. They are available with 9 left or right hand rotation, or with guided straight pull. The breather port on single-acting models may be replaced with tubing for remote venting. The optional arms clamp securely to the piston rod to reduce fatigue and deflection. rms may be easily modified or custom arms may be substituted. 3-1-S-24 Features: dvanced seals and wipers utilize a special, highly wear-resistant construction for long cycle life and 5, PSI operation Triple track piston rod design for field adjustable swing direction ardened and hard chrome plated piston rod for increased strength and wear resistance dvanced metal treated body for superior wear and corrosion resistance MRO interchange design Straight pull capacity 3,15 lbs. at 5, PSI max 35 3-1--24 T Port 25 S 5 Port L U lamping Force (Lbs.) 3 25 2 15 1 Performance 1 2 3 4 5 ydraulic Pressure (PSI) For 2,4 lb. Swing/Pull lamp rms see Page M-Y-11 Q J K M G F N P R With 31-L-24 rm (6.36" long) With 31-S-24 rm (2.43" long) Straight Pull at. no. 3-1-S-24 (-X) Oper. Single- cting 3-1--24 (-X) oubleacting Swing irection Left and (ounter lockwise) Right and (lockwise) Straight Pull *Force ff. rea (sq. In.) Oil ap. (cu. In.) (lbs.) lamp Unclamp lamp Unclamp 24.63.7 1.23 1.1 Max Oil Flow in3/m in 1 Ordering Notes: Left hand swing (ccw) is standard no suffix dd R suffix for right hand swing dd S suffix for straight guided pull at. no. 3-1-S-24 3-1--24 Total lamping lamp Port Unclamp Port F G J K L M N P Q R S T U 1.12.5.62 S-4 S-4 t 3.38 4.38 6.8 1.28 M1x 1.5.196.87 1-7/8-16UN 7.543.517 2. 2.38 1. This item is available upon request NOT: *With 2.43 long arm at 5, PSI maximum operating pressure. o not pressurize single-acting only See page M-Y-11 for arms, accessories and custom arm mounting M-Y-9

3 Series ydraulic Power lamps ydraulic Swing/Pull lamps 4, lb. The STO Threaded ody Swing/Pull lamps are available in both single-acting and double-acting versions. They incorporate the latest hydraulic swing clamp technology. The top port design allows easy access for plumbing connections. They are available with 9 left or right hand rotation, or with guided straight pull. The breather port on single-acting models may be replaced with tubing for remote venting. The optional arms clamp securely to the piston rod to reduce fatigue and deflection. rms may be easily modified or custom arms may be substituted. 3-1-S-4 Features: dvanced seals and wipers utilize a special, highly wear-resistant construction for long cycle life and 5, PSI operation Triple track piston rod design for field adjustable swing direction ardened and hard chrome plated piston rod for increased strength and wear resistance dvanced metal treated body for superior wear and corrosion resistance MRO interchange design Straight pull capacity 5,5 lbs. at 5, PSI max 5 S 3-1--4 25 T U lamping Force (l bs.) 5 45 4 35 3 25 2 15 1 5 Performance 1 2 3 4 5 ydraulic Pressure (PSI) For 4, lb. Swing/Pull lamp rms see Page M-Y-11 Q J K G F M L N R With 31-L-4 rm (X.XX" long) With 31-S-4 rm (X.XX" (7.1 long) long) Straight Pull (2.75 long) P at. no. 3-1-S-4 (-X) 3-1--4 (-X) Oper. Single- cting oubleacting Swing irection Left and (ounter lockwise) Right and (lockwise) Straight Pull *Force ff. rea (sq. In.) Oil ap. (cu. In.) (lbs.) lamp Unclamp lamp Unclamp 4 1.1 1.22 2.35 2.6 Max Oil Flow in3/m in 14 Ordering Notes: Left hand swing (ccw) is standard no suffix dd R suffix for right hand swing dd S suffix for straight guided pull This item is available upon request at. no. 3-1-S-4 3-1--4 Total lamping lamp Port Unclamp Port F G J K L M N P Q R S T U 1.7.45.75 S#4 S#4 2.7 2.83 4.9 6.67.64 1.61.14 1.26 2-1/2-16 7.3.33 2.56 2.99 1.28 UN This item is available upon request NOT: *With 2.75 long arm at 5, PSI maximum operating pressure. o not pressurize single-acting only See page M-Y-11 for arms, accessories and custom arm mounting M-Y-1

3 Series ydraulic Power lamps ydraulic Swing/Pull lamps 475-2,4 lb. rms ustom built arms of any length must clamp to the swing/pull clamp s piston rod in a manner similar to the STO arms or some derating of the clamp will be necessary. T P G The design feature K, in the chart and drawing at the bottom of this page, is recommended for all applications of custom, single arms. See the accompanying chart for design details. In applications where there is no bending stress being transferred into the piston rod (like push/ pull linkages and equalizing double arms), this design detail may be eliminated. In these applications, the clamp s full capacity (referred to as straight pull capacity) is available. I U O M L K Q N J at. no. Weight G I J K L M N O P Q T U (lbs.) 31-S-475 1.929.79 M6.63 1.139.394.63.394.394.256.984 M6.236 1.22.159 31-L-475 3.959.79.63 1.166.394.63.394.394.256 M6 3.25.348 31-S-11 2.598.79 M8.748 1.294.433.748.63.472.33 1.575 M6.315 1.889.286 31-L-11 6.19.79.748.126 1.412.433.748.236.217.63.472.335 M6 5.31.721 31-S-24 3.268.866 M1 1.125 1.459.633 1..866.79.413 1.969 M8.433 2.42.634 31-L-24 7.226.866 1.125 1.696.633 1..866.79.413 M8 6.36 1.564 IMPORTNT: ny clamp using a modified or custom arm that is longer or heavier than STO s standard arms must be derated to prevent internal damage. o not exceed the maximum speed and pressure ratings for STO s standard arms. For maximum hydraulic pressure and speed ratings, see the accompanying charts o not use meter-out circuitry for controlling double-acting clamp speeds ontact STO if further design assistance is required ustom rm Mounting imensions for Swing/Pull lamps Shaft ia. F G J K M 1 MM.394.256.63.63.79.394.236.217 M6 x 1. K F M 16MM.63.335.748.748.79 1.26.472.236.217.3 M6 x 1. 22 MM.866.413 1. 1..866.79.236.217 M8 x 1.25 G J lamping Force (Lbs.) Max. llowable rm Weight =.35 Lbs Pressure (psi) 5 3575 25 2 1785 157 136 6 5 4 3 2 1.98 1. 1.5 2.5 3. rm Length (In.) 12 6 3 Max Flow (in /min.) lamping Force (Lbs.) Max. llowable rm Weight =.73 Lbs 5 Pressure (psi) 385 27 215 1775 1425 125 1 75 25 1.57 2.5 3.5 4.5 rm Length (In.) 24 12 3 Max Flow (in /min.) lamping Force (Lbs.) Max. llowable rm Weight = 1.6 Lbs Pressure (psi) 5 3625 29 2465 196 145 3 25 2 15 1 5 2. 3. 4. 5. 6. 98 rm Length (In.) 49 3 Max Flow (in /min.) hart Legend Maximum Length / Pressure Operating Range lamps must operate at or below maximum arm length/pressure curve: To approximate clamping force with any arm at less than maximum pressure: FOR = P x x [1-(P/M x.23)] P = yd. system operating pressure (PSI) = lamp effective area (sq. in.) M = Max. rated pressure of chosen arm length (PSI) M-Y-11

3 Series ydraulic Power lamps ydraulic Swing/Pull lamps 4, lb. rms ustom built arms of any length must clamp to the swing/pull clamp s piston rod in a manner similar to the STO arms or some derating of the clamp will be necessary. The design feature K, in the chart and drawing at the bottom of this page, is recommended for all applications of custom, single arms. See the accompanying chart for design details. In applications where there is no bending stress being transferred into the piston rod (like push/pull linkages and equalizing double arms), this design detail may be eliminated. In these applications, the clamp s full capacity (referred to as straight pull capacity) is available. I V T M U P (31-S-4) L G K J Q (31-L-4) at no. 31-S-4 G I J K L M P Q T U V 4.17 1.42 1/2-13 1.89.138 2.56.83 1.18.55.43 1.26 2.17 M12.58 2.75.98 1.8 Weight (lbs.) 31-L-4 8.43 1.42 1/2-13 1.89.138 2.56.83 1.18.55.43 1.26 M12 7.1.98 2.8 IMPORTNT: ny clamp using a modified or custom arm that is longer or heavier than STO s standard arms must be derated to prevent internal damage. o not exceed the maximum speed and pressure ratings for STO s standard arms. For maximum hydraulic pressure and speed ratings, see the accompanying charts o not use meter-out circuitry for controlling double-acting clamp speeds ontact STO if further design assistance is required ustom rm Mounting imensions for 4, lb. Swing/Pull lamps at no. F G 32MM 1.26 1.18 1.89 1.42.138.55.43 M12 x 1.75 G F 31-S-4 31-L-4 lamping Force (Lbs.) Max. llowable rm Weight = 2.8 Lbs Pressure (psi) 5 3625 31 254 2175 1885 174 45 4 35 3 25 2 15 1 5 2.17 3. 4. 5. 6. 7. 152 rm Length (In.) 91 3 Max Flow (in /min.) hart Legend Maximum Length / Pressure Operating Range lamps must operate at or below maximum arm length/pressure curve: To approximate clamping force with any arm at less than maximum pressure: FOR = P x x [1-(P/M x.23)] P = yd. system operating pressure (PSI) = lamp effective area (sq. in.) M = Max. rated pressure of chosen arm length (PSI) M-Y-12

39 Series ydraulic Power lamps ir/ydraulic Power oosters The STO ir/ydraulic Power ooster converts normal shop-line air pressure to high-pressure hydraulic power. The two models available provide oil displacements ranging from 1 cu. in. to 4 cu. in. per stroke. With the system filled, the volume of oil required to actuate a cylinder or pressure point is only equal to the cubic content of the piston displacement. The small booster, producing 1 cu. in. of usable oil per stroke, can operate 5 of the tiny 1/2-2 pressure points a full.22 max. stroke, and even more when strokes are kept to a minimum. Features: uilt-in manifold omplete automatic bleeding with each return stroke utomatic relief of system overcharge utomatic bleeding feature eliminates pre-filling Large volume visible oil reservoir automatically replenishes the system with reserve oil capacity orrosion and wear-resistant materials Wear rings on hydraulic piston tube Unique self-centering air piston assures long life Increases hydraulic pressure to 3, PSIG from 1 PSIG air-line pressure ll models supplied with S hydraulic ports NPT hydraulic ports available on request 39-14- Y X S YRULI PORTS Model no. Press Ratio isplacement Per Nominal Reservoir apacity Weight imensions (Square) Ports 1/4 NPT IR PORTS 39-11- 33.87:1 1 cu. in. 1.4 cu. in. 9 lbs. 1.88 4.5 S #4 39-14- 32.41:1 4 cu. in. 42 cu. in. 23 lbs. 16.38 6.5 S #4 (1 PSIG max. input air pressure) Note: Special igh Temperature Seals available for applications where Viton Seals are required. Order as /T option. M-Y-13

hydraulic power clamps Notes M-Y-14