TuffCam 7 MPa Swing Clamps

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1 TuffCam 7 MPa Swing Clamps Frequently Asked Questions C-1 When do you recommend the use of TuffCam 7 MPa Swing Clamps over other Vektek product? Sometimes there are applications where speed is essential. Sometimes size and weight are critical. Often an available power supply limits pressure available. What kind of return on my investment can I reasonably expect by converting my manual clamps to TuffCam 7 MPa Swing Clamps? Ask your Vektek sales representative for the Power Workholding Brochure. Time studies and costs are comparable justification. What makes the cam follower ball seat so special in these units? The three cams and three cam balls guide the rotation of the plunger and provide greater guide, support and directional stability. The patented cam follower design is unique in the industry and uses solid tungsten carbide balls and stainless steel ball seats. The ball seat design assures that the ball rolls in the cam rather than jamming and scraping resulting in wear on both the cam track and ball. This vastly improves swing repeatability, contacting the same point ±0.25 degrees. I want to use work supports with TuffCam 7 MPa Swing Clamps. Can you give me some tips that will help me get the most from my clamping devices? Vektek 7 MPa Work Supports and Swing Clamps are made in capacity sets as well as arm-to-support centerline measurement. It is important to hit my part in the exact place every time in my application. Will your TuffCam 7 MPa Swing Clamps meet this requirement? Standardized repeatability of ±0.25 degrees is "Best-In-Class" Worldwide. What defines a TuffCam 7 MPa Swing Clamp? TuffCam 7 MPa is a single direction tri-cam design swing clamp. These clamps produce the strength and reliability to support faster speeds and larger arms. TuffCam 7 MPa delivers notably better accuracy and repeatability over other brands. The clocking feature, dramatically reduces the time it takes to change arms for maintenance, replacement or design set up. How can I measure the clamp speed? The maximum speed of a swing clamp is applicable to both clamp and unclamp function, as the momentum on the cam track and cam follower apply to both movements. To approximate the speed of your application: * Look down the centerline of the swing clamp, perpendicular to the arm. * Actuate your clamping system while watching the arm swing into position. * If while looking directly into the end of the swing clamp, you can observe the arm move through its swing, the positioning time should be somewhere around ½ second or longer. See flow rates and clamping time in page C-2 * If, while looking directly into the end of the swing clamp, you can cannot observe the arm move, or it is unclamped and the next thing you can see is that it in the clamped position, the positioning time is something substantially less than 1/2 second. Your standard model clamp is at risk of premature failure. See flow rates and clamping time in page C-2 * It is possible to approximate the clamp time by adding the total active volume of devices in the specific control branch of your system, and dividing that volume (cubic mm) by your pump s output volume (cubic mm per minute) and then multiplying that number by 60 (60 seconds per minute). This will give you the theoretical calculated time to move a device through its stroke, but does not account for flow loss due to flow restrictions in the system. I want to use the jam nut only to hold my arm in place. Will this work? It is unlikely that you can use the jam nut to hold arm orientation ad e quate ly. We have had customers modify clamps to include flats, pins, serrations or use set screws to hold orientation. These methods may work in specific instances. We still rec om mend our method of attachment, locknut and cross bolt for a secure, dependable, universal attachment. Other methods may complicate the replacement of clamps when they are damaged by a machine crash or other problems. Why should I buy your arm rather than have my tool mak er make one? Our arm is designed to hold orientation when properly installed. It has a relief to keep from over-stressing the locknut. It will probably cost you less than the total cost of making your own. You can rest assured that our arm is made to our spec i fi ca tions and will withstand the forces our clamps generate, when used as recommended. I need an arm slightly different from those you make. Can I make or modify your arms? Our first recommendation is to modifying our existing arms if possible. All VektorFlo arms are able to be machined or welded. You should be able to easily modify any standard arm you purchase. We recommend this because our original design for the cross bolt orientation mechanism is the most secure, dependable and ver sa tile orientation method available. Many customers and competitors have tried to copy it, some with limited success. If you desire to make your own arm(s), refer to the detailed information on page D-3. Please be sure to put in the 0.5 mm step for the locknut and relieve the cut in the arm so that the bolt will squeeze the plunger shaft. If you do not take these two steps, your custom arm may not work satisfactorily. NOTE: See Arm Length and Pressure Limitation Graphs on Page D-5. Vektek August

2 TuffCam 7 MPa Swing Clamps Features C-2 U. S. Patent Nos. 7,032,897 5,820,118 TuffCam 7 MPa Swing Clamp TuffCam 7 MPa Swing Clamps were developed to meet your demand for high-speed, precise positioning and/or heavy arm applications in a 7 MPa operating pressure environment. One of the keys to this innovation is the patented spring loaded TuffCam design that was developed to improve strength and wear. Using the patented Vektek V-Groove, a stainless steel ball seat, these clamps have reduced static friction for improved clamp breakaway and reduced dynamic friction for improved life. This combination adds up to producing the most accurate and repeatable swing clamp cam assembly. Available in 6 sizes from 1.9 kn to 20.4 kn at 7 MPa (70 bar), in Top Flange and Bottom Flange body styles. Double acting Three cams for more accurate arm positioning (90 ± 3 swing accuracy) (±0.25 contact position repeatability) 7 MPa swing clamps are designed to work at any pressure between 1 MPa (10 bar) and 7 MPa (70 bar) using either the standard or extended length arms without the need for pressure reduction. Patented ball seat for improved rotary function, cam follower contact, and reduced dynamic and static friction. Tungsten Carbide balls BHC (Black Hard Coating) on the cylinder bodies helps prevent scoring and scratching. Clocking features help to improve and speed-up arm changes. (Page C-11) Arms ordered separately see section D. Clamp Time and Fluid Flow Rates for TuffCam 7 MPa Swing Clamps Maximum TuffCam 7 MPa Swing Clamp Force (kn) (mm) Standard Arm Fastest Allowable Clamp Time (sec) Standard Arm Maximum Allowable Flow Rate (l/min) Cam Follower Ball Seat 7 MPa TuffCam Swing Clamp Cam Follower Design Extended Arm Fastest Allowable Clamp Time (sec) Extended Arm Maximum Allowable Flow Rate (l/min) The above flows are maximum recommendations and clamp times are minimum recommendations. - When using custom arms the extended arm flows and times are to be considered the limiting factor. - The actual time to position the clamp will vary by custom arm configuration. Excess weights may require slower speeds and customer testing in specific application to establish limits. ILML14006 REV A * Three cams for more accurate arm positioning, smoother rotation, and lower per cam surface contact pressure. * Stainless steel ball seat for improved rotary function, cam follower contact, and reduced friction. * Increased cam groove contact force provided by stainless steel springs. * Ball material is tungsten carbide, one of the world s hardest materials Vektek August 2016

3 TuffCam 7 MPa Swing Clamp Top Flange Swing Clamp C-3 Double Acting Six clamp capacities are available ranging from1.9 kn to 20.4 kn. TuffCam 7 MPa Swing Clamps are designed to operate from 1 MPa (10 bar) to 7 MPa (70 bar) without pressure reducing. Even with extended arm. 7 MPa Clamps and work supports are paired to work at pressures between 4 MPa (40 bar) and 7 MPa (70 bar) without pressure reducing the clamp. Patented ball seat delivers improved rotary function and cam follower contact, while reducing dynamic and static friction. Tungsten-Carbide cam followers for strength and wear. Clamp repeatability ±0.25 and swing angle repeatability 90 ± 3. Consult table on page C-2 for clamp time and fluid flow rates Clocking feature for the TuffCam 7 MPa product line see page C-11. Arms sold separately on pages D-2 to D-6. The standard length 7 MPa arm with the threaded contact bolt hole is designed to clamp over the work support centerline. Can be either manifold mounted or plumbed. Optional in-port flow control ia a meter-in device with a reverse free flow check valve. Specifications Model No. Swing Direction L L L R L L L R L L L R L L L R Double Acting (D/A) Cylinders, actuated hydraulically both directions. L L L R L L L R Cylinder Capacity (kn)* (mm) Vertical Clamp Stroke (mm)** Total Stroke (Swing + Vertical) (mm) Effective Piston Area (cm 2 ) Retract Oil Capacity*** (cm 3 ) Extend Oil Capacity*** (cm 3 ) Retract Optional Flow Control Model No.**** L L L L L L WARNING! Never allow swing arm to contact workpiece or fixture during arm rotation. * Cylinder capacities are listed at 7 MPa (70 bar) operating pressure, with a standard length VektorFlo 7 MPa arm installed. Maximum operating pressure is 10 MPa (100 bar). The minimum operating pressure is 1 MPa (10 bar). The clamping force is adjustable by varying the hydraulic system pressure. To determine the approximate output force for your application, divide the cylinder capacity shown above by 7 MPa (70 bar), and multiply the resultant number by your system operating pressure MPa (bar) to obtain the approximate clamping force for your application. (Actual force will vary slightly due to internal cantilever loading, and/or friction loss.) ** To allow for piece part height variations, it is recommended that the vertical travel be set to about 50% of the vertical stroke. *** To ensure maximum service life and trouble-free operation, restrict fluid flow per table on page C-2. **** In-port flow control requires the use of manifold mount port. Vektek August

4 TuffCam 7 MPa Swing Clamp Top Flange Swing Clamp Dimensions Model No. L L L L L L Double Acting (D/A) Cylinders, actuated hydraulically both directions. A B C D E F G H J K L M N G 1/8 G 1/8 G 1/8 G 1/4 G 1/4 G 1/4 P ID 4.0 x ID 4.0 x ID 4.0 x ID 8.0 x ID 8.0 x ID 8.0 x Q R S T V W X M8 x 1.00 M10 x 1.25 M12 x 1.50 M14 x 1.50 M18 x 1.50 M22 x 1.50 Y Z MA MB MC MD M4 M5 M6 M8 M10 M12 ME MF MG Add the letter -L or -R to the end of your model number to indicate swing direction. C-4 Through Plate Mounting Configuration Plumb through the fixture using manifold mount port. Plumb through tubing using G port. For proper sealing, the mating surface must be flat within 0.08 mm with a maximum surface roughness of 1.6 μm R a Vektek August 2016

5 TuffCam 7 MPa Swing Clamps Bottom Flange Swing Clamp C-5 Double Acting TuffCam 7 MPa Swing Clamps are designed to operate from 1 MPa (10 bar) to 7 MPa (70 bar) without pressure reduction. Six clamp capacities are available ranging from 1.9 kn to 20.4 kn. TuffCam 7 MPa Swing Clamps are designed to operate from 1 MPa (10 bar) to 7 MPa (70 bar) without pressure reducing. Even with extended arm. Clamp repeatability ±0.25 and swing angle repeatability 90 ± 3. Consult table on page C-2 for clamp time and fluid flow rates Patented ball seat delivers improved rotary function, cam follower contact, while reducing dynamic and static friction. Can be either manifold mounted or plumbed. Tungsten-Carbide cam followers for strength and wear. Clocking feature for the TuffCam 7 MPa on page C-11. Arms sold separately on pages D-2 to D-6. T he standard length 7 MPa arm with the threaded contact bolt hole is designed to clamp over the work support centerline. Optional in-port flow control ia a meter-in device with a reverse free flow check valve. Specifications Model No. Swing Direction L L L R L L L R L L L R L L L R Double Acting (D/A) Cylinders, actuated hydraulically both directions. L L L R L L L R Cylinder Capacity (kn)* (mm) Vertical Clamp Stroke (mm)** Total Stroke (Swing + Vertical) (mm) Effective Piston Area (cm 2 ) Retract Oil Capacity*** (cm 3 ) Extend Oil Capacity*** (cm 3 ) Retract Optional Flow Control Model No.**** L L L L L L WARNING! Never allow swing arm to contact workpiece or fixture during arm rotation. * Cylinder capacities are listed at 7 MPa (70 bar) operating pressure, with a standard length VektorFlo 7 MPa arm installed. Maximum operating pressure is 10 MPa (100 bar). The minimum operating pressure is 1 MPa (10 bar). The clamping force is adjustable by varying the hydraulic system pressure. To determine the approximate output force for your application, divide the cylinder capacity shown above by 7 MPa (70 bar), and multiply the resultant number by your system operating pressure MPa (bar) to obtain the approximate clamping force for your application. (Actual force will vary slightly due to internal cantilever loading, and/or friction loss.) ** To allow for piece part height variations, it is recommended that the vertical travel be set to about 50% of the vertical stroke. *** To ensure maximum service life and trouble-free operation, restrict fluid flow per table on page C-2. **** In-port flow control requires the use of manifold mount port. Vektek August

6 TuffCam 7 MPa Swing Clamps Bottom Flange Swing Clamp Dimensions Model No. L L L L L L Double Acting (D/A) Cylinders, actuated hydraulically both directions. A B C D E F G ØJ L M N G 1/8 G 1/8 G 1/8 G 1/4 G 1/4 G 1/4 P ID 4.0 x ID 4.0 x ID 4.0 x ID 8.0 x ID 8.0 x ID 8.0 x Q R S T V W X M8 x 1.00 M10 x 1.25 M12 x 1.50 M14 x 1.50 M18 x 1.50 M22 x 1.50 Y Z MA MB MC MD M4 M5 M6 M8 M10 M12 ME MF MG Add the letter -L or -R to the end of your model number to indicate swing direction. C-6 Above Plate Mounting Configuration Plumb through the fixture using manifold mount port. Under Plate Mounting Configuration Plumb through tubing using the G port For proper sealing, the mating surface must be flat within 0.08 mm with a maximum surface roughness of 1.6 μm R a Vektek August 2016

7 TuffCam 7 MPa Swing Clamps Clevis Plunger Top Flange C-7 Double Acting Clamps available in 6 retract capacites ranging from 2.2 kn to 24.1 kn. Designed to operate at 7 MPa. Use double ended Rocker Arms to apply equal force on two surfaces of different heights. Maximum allowable arm travel for work piece deviation is ± 10 Six standard arm positions available in 30 increments. Request other angle increments through Vektek. Clamp repeatability ±0.25 and swing angle repeatability 90 ± 3. Consult table on page C-2 for clamp time and fluid flow rates Stainless steel pivot pin, carbon steel retaining rings and rubber centralizing springs included. Patented ball seat delivers improved rotary function and cam follower contact, while reducing dynamic and static friction. Tungsten-Carbide cam followers for strength and wear. Arms sold separately. page D-6. Can be manifold mounted or plumbed. Optional in-port flow control ia a meter-in device with a reverse free flow check valve. Specifications Model No. Swing Direction L L L R L S L L L R L S L L L R L S L L L R L S Double Acting (D/A) Cylinders, actuated hydraulically both directions. L L L R L S L L L R L S Cylinder Capacity (kn)* (mm) Vertical Clamp Stroke (mm)** Total Stroke (Swing + Vertical) (mm) Effective Piston Area (cm 2 ) Retract Oil Capacity*** (cm 3 ) Extend Oil Capacity*** (cm 3 ) Retract Optional Flow Control Valve Model No. L L L L L L Add the Clevis orientation indicator to the end of your item number. The indicators are -0, -30, -60, -90, -120, or Include the dash. WARNING! Never allow swing arm to contact workpiece or fixture during arm rotation. * Cylinder retract capacities are listed at 7 MPa (70 bar) operating pressure. Divide cylinder retract force by 2 for when using symetrical length arm. Maximum operating pressure is 10 MPa (100 bar). The minimum operating pressure is 1 MPa (10 bar). The clamping force is adjustable by varying the hydraulic system pressure. To determine the approximate output force for your application, divide the cylinder capacity shown above by 7 MPa (70 bar), and multiply the resultant number by your system operating pressure MPa (bar) to obtain the approximate retract force for your application. (Actual force will vary slightly due to internal loading, and/or friction loss.) ** To allow for piece part height variations, it is recommended that the vertical travel be set to about 50% of the vertical stroke. *** To ensure maximum service life and trouble-free operation, restrict fluid flow per table page C-2. **** In-port flow control requires the use of manifold mount port. Vektek August

8 TuffCam 7 MPa Swing Clamps Clevis Plunger Top Flange Dimensions Model No. L L L L L L L L L L L L L R L R L R L R L R L R L S L S L S L S L S L S Double Acting (D/A) Cylinders, actuated hydraulically both directions. A B C D E F G H J K L M N G 1/8 G 1/8 G 1/8 G 1/4 G 1/4 G 1/4 P ID 4.0 X ID 4.0 X ID 4.0 X ID 8.0 X ID 8.0 X ID 8.0 X CS 3.0 Q R S T V W X Z MA MB MC MD M4 M5 M6 M8 M10 M12 ME MF MG Add the Clevis orientation indicator to the end of your item number. The indicators are -0, -30, -60, -90, -120, or Include the dash. C For proper sealing, the mating surface must be flat within 0.08 mm with a maximum surface roughness of 1.6 µm R a 0 VIEW SHOWS CLEVIS ORIENTATION IN THE CLAMPED POSITION. ILML14014 REV B Vektek August 2017

9 TuffCam 7 MPa Swing Clamps Clevis Plunger Bottom Flange C-9 Double Acting Clamps available in 6 retract capacites ranging from 2.2 kn to 24.1 kn. Designed to operate at 7 MPa. Use double ended Rocker Arms to apply equal force on two surfaces of different heights. Allowable arm travel for work piece deviation is ± 10 Six standard arm positions available in 30 increments. Request other angle increments through Vektek. Clamp repeatability ±0.25 and swing angle repeatability 90 ± 3. Consult table on page C-2 for clamp time and fluid flow rates Patented ball seat delivers improved rotary function, cam follower contact, while reducing dynamic and static friction. Choose manifold mount above or below the flange or plumb the device. Tungsten-Carbide cam followers for strength and wear. Clocking feature for the TuffCam 7 MPa on page C-11. Arms sold separately on pages D-2 to D-6. T he standard length 7 MPa arm with the threaded contact bolt hole is designed to clamp over the work support centerline. Optional in-port flow control ia a meter-in device with a reverse free flow check valve. Specifications Model No. Swing Direction L L L R L S L L L R L S L L L R L S L L L R L S Double Acting (D/A) Cylinders, actuated hydraulically both directions. L L L R L S L L L R L S Cylinder Capacity (kn)* (mm) Vertical Clamp Stroke (mm)** Total Stroke (Swing + Vertical) (mm) Effective Piston Area (cm 2 ) Retract Oil Capacity*** (cm 3 ) Extend Oil Capacity*** (cm 3 ) Retract Optional Flow Control Model No. L L L L L L Add the Clevis orientation indicator to the end of your item number, include the dash. The indicators are -0, -30, -60, -90, -120, or Inclede the dash. WARNING! Never allow swing arm to contact workpiece or fixture during arm rotation. * Cylinder retract capacities are listed at 7 MPa (70 bar) operating pressure. Divide cylinder retract force by 2 for when using symetrical length arm. Maximum operating pressure is 10 MPa (100 bar). The minimum operating pressure is 1 MPa (10 bar). The clamping force is adjustable by varying the hydraulic system pressure. To determine the approximate output force for your application, divide the cylinder capacity shown above by 7 MPa (70 bar), and multiply the resultant number by your system operating pressure MPa (bar) to obtain the approximate retract force for your application. (Actual force will vary slightly due to internal loading, and/or friction loss.) ** To allow for piece part height variations, it is recommended that the vertical travel be set to about 50% of the vertical stroke. *** To ensure maximum service life and trouble-free operation, restrict fluid flow per table page C-2. **** In-port flow control requires the use of manifold mount port. Vektek August

10 TuffCam 7 MPa Swing Clamps Clevis Plunger Bottom Flange Dimensions Model No. L L L L L L L L L L L L L R L R L R L R L R L R L S L S L S L S L S L S Double Acting (D/A) Cylinders, actuated hydraulically both directions. A B C D E F G J L M N G 1/8 G 1/8 G 1/8 G 1/4 G 1/4 G 1/4 P ID 4.0 X ID 4.0 X ID 4.0 X ID 8.0 X ID 8.0 X ID 8.0 X Q R S T V W X Z MA MB MC MD M4 M5 M6 M8 M10 M12 ME MF MG Add the Clevis orientation indicator to the end of your item number. The indicators are -0, -30, -60, -90, -120, or Include the dash. C For proper sealing, the mating surface must be flat within 0.08 mm with a maximum surface roughness of 1.6 µm R a 0 VIEW SHOWS CLEVIS ORIENTATION IN THE CLAMPED POSITION. ILML14014 REV B Vektek August 2017

11 TuffCam 7 MPa Swing Clamps Clocking, Swing Clamp Restrictors C-11 TuffCam 7 MPa Arm Clocking Feature The 3 divots or "Clocking Features", located on the plunger, help arm installation in repeat fixture applications and with arm changes when maintaining fixtures. Installing a set screw into the arm properly positions the arm relative to the plunger and swing clamp body. The 3 divots are located at 120 intervals around the plunger to assure access to at least one in any body-arm orientation. Vektek swing clamp arms are made with clearance to allow the drilling and installation of set screws according to this drawing. TuffCam is a trademark of Vektek, Inc. Shown in Clamp Position Set Screw Size and Location Model No. L1-4X25-00-X L1-4X32-00-X L1-4X40-00-X L1-4X50-00-X L1-4X63-00-X L1-4X80-00-X Set Screw M3 M3 M4 M4 M5 M6 A TuffCam TM Swing Clamp Swing Restrictors Model No. L1-4X25-00-X L1-4X32-00-X L1-4X40-00-X L1-4X50-00-X L1-4X63-00-X L1-4X80-00-X Clamp Capacity (kn) (mm) º 60º 30º CLAMP POSITION Swing Restrictor 30 Swing Restrictor 45 L L L L L L L L L L L L º Vektek Swing Restrictors Swing Restrictor 60 L L L L L L Custom,angle restrictors available on request. ILML14011 REV A Vektek August

12 TuffCam 7 MPa Swing Clamp Arms Frequently Asked Questions I need to make my own arms, what information do I need? The information that you need is detailed on page D-3. We strongly encourage you to copy our connection to the swing clamp rod. The com bi na tion of the top locknut and side bolt squeezing action is the most secure connection on the market today. You should be sure to put the 0.5 mm step in your custom arms for best results. Can I modify the arms I buy from you? Yes, you can. Our arms are made of a cast alloy steel that you can easily weld or machine to fit your needs. Do I really need to put the step in the top of the arm like you do? Yes, you should. The step in top of the arm relieves stress on the locknut and the piston rod. If you make custom arms and leave this off, you will probably experience pre ma ture failures if your clamps are run near maximum capacity. I want to use the locknut only to hold my arm in place. Will this work? It is unlikely that you can use the locknut to hold arm orientation ad e quate ly. We have had customers modify clamps to include flats, pins, serrations or use set screws to hold orientation. These methods may work in specific instances. We still rec om mend our method of attachment, locknut and cross bolt for a secure, dependable, universal attachment. Other methods may complicate the replacement of clamps when they are damaged by a machine crash or other problems. I am using a double ended arm. Is the capacity of your 8 kn swing clamp still the same? No. First of all, the 8 kn rating is with a standard arm installed and includes the frictional loss inherent in all can ti le vered designs. The true capacity rating for this clamp is 9.4 kn. If you are pulling in the center of the arm and both points are being contacted at the same time, divide the force by 2 (two). Why should I buy your arm rather than have my tool mak er make one? Our arm is designed to hold orientation when properly installed. It has a relief to keep from over-stressing the locknut. It will probably cost you less than the total cost of making your own. You can rest assured that our arm is made to our spec i fi ca tions and will withstand the forces our clamps generate, when used as recommended. Vektek arms also include an area to add clocking set screws making arm changes faster and more accurate. I need an arm slightly different from those you make. How do I make my own? Our first recommendation is to investigate the possibility of modifying our existing arms. All VektorFlo arms are machinable and weldable. You should be able to easily modify any standard arm you purchase. We recommend this because our original design for the cross bolt orientation mechanism is the most secure, dependable and ver sa tile orientation method available. Many customers and competitors have tried to copy it, some with limited success. We welcome you to use our method. Please be sure to put in the 0.5 mm step for the locknut and use the bolt to squeeze the plunger shaft. If you do not take these two steps, your custom arm may not work satisfactorily. Can I pin the arm to hold orientation? Yes, it is possible to add a set screw to our standard arms to assure orientation is retained. We do not rec om mend a pin because it limits the future replacement of clamps and arms with standard product when (not if) there is a machine crash. Our arms, when installed properly, will hold orientation in normal use. They will hold even when crashed repeatedly. Customer designed arms sometimes require pins but often are very expensive compared to our "off the shelf" models. I want to clamp two parts, with each double ended swing clamp arm. Do I need a fixed or pivoting arm? If your parts will not vary in size (clamped height) you can probably get by with a fixed clamp arm. If your parts vary by as little as 0.1 mm you may get sig nif i cant variations in clamp force with a fixed arm (higher force on the taller part, lighter force on the shorter one). If your parts vary or the clamp force is crucial, we recommend a pivoting arm so that the force is equalized on both parts. (Re mem ber, if the length varies, the resulting forces may change. Be sure that both ends are equal length.) Do you have a way to "quick change" my clamp arms? The Clocking Features, located on the plunger, help arm installation in repeat fixture applications and with arm changes when maintaining fixtures. Installing a set screw into the arm properly positions the arm relative to the plunger and swing clamp body. Vektek swing clamp arms are made with clearance to allow the drilling and installation of set screws. See page C-11. I have a number of parts to clamp with my swing clamp fixture. The parts are of different heights. Do you have an easy way to alter the clamp arms to make them work for all heights? You will need to make a custom attachment. Set your swing clamp to be able to clamp the tallest part with the standard arm. The height or width can then be adjusted by attaching a contact device to the arm. You might also want to consider the clevis clamp for minor variations in height D Vektek August 2016

13 TuffCam 7 MPa Swing Clamp Arms Arm Dimensions Standard 7 MPa Arm Dimensions Model No. L L L L L L Model numbers above have a threaded hole (dimension "F") positioned on work support centerline, the model numbers below do not have a threaded hole. Model No. L L L L L L D-2 See Page I-1 for Spherical Contact Points Cylinder Capacity (kn) (mm) A B C D E F M6 x 1 M8 x 1.25 M10 x 1.5 M12 x 1.75 M16 x 2 M20 x 2.5 G H J K L M N M6 x 1 M8 x 1.25 M10 x 1.5 M12 x 1.75 M16 x 2 M20 x 2.5 P Q R S T V ILML91400 REV A - See page C-11 for suggested hole location for use with the clocking feature. - All dimensions are in mm. Extended 7 MPa Arm Dimensions Model No. L L L L L L Extended Arms have no pre-drilled or tapped holes. Swing speed must be reduced. Cylinder Capacity (kn) (mm) A B C D E F G H J K L M6 x 1 M8 x 1.25 M10 x 1.5 M12 x 1.75 M16 x 2 M20 x 2.5 M N P Q R ILML91401 REV A - See page C-11 for suggested hole location for use with the clocking feature. - All dimensions are in mm. Vektek August

14 TuffCam 7 MPa Swing Clamp Arms Self-produced Clamp Arm D-3 SECTION C-C Dimensions Arm Series L XX L XX L XX L XX L XX L XX Recommended Machining Dimensions for Self-produced Clamp Arms. Cylinder Capacity (kn) (mm) A B C ØD ØE F G H ØJ ØK L M6 x 1-6H M8 x H M10 x 1.5-6H M12 x H M16 x 2-6H M20 x 2.5-6H M All dimensions in mm - See page C-11 to prepare arms for use with the clocking features Vektek August 2016

15 TuffCam 7 MPa Swing Clamp Arms Clamping Force Tables D-4 Operating Pressure Cylinder Force (kn) L1-4X25-00 Arm Length L (mm) Max Arm Length L (mm) Max Op. Pressure ILML REV B Operating Pressure Cylinder Force (kn) L1-4X32-00 Arm Length L (mm) Max Arm Length L (mm) Max Op. Pressure ILML REV B L1-4X40-00 Operating Cylinder Max Pressure Force Arm Arm Length L (mm) (kn) Length L (mm) Max Op. Pressure ILML REV B Operating Pressure L1-4X50-00 Cylinder Max Force Arm Length L (mm) Arm (kn) Length L (mm) Max Op. Pressure ILML REV B Operating Pressure Cylinder Force (kn) L1-4X63-00 Arm Length L (mm) Max Arm Length L (mm) Max Op. Pressure ILML REV B How to Use the Clamping Force Tables 1) Start by choosing the arm length you need for your application. 2) Then move along the line and select the clamping force and operating pressure or operating pressure and clamping force needed. Example: Using a L1-4X25-00 with a 30 mm arm; the clamping force would be 1.4 kn at 5.0 MPa L1-4X25-00 Operating Cylinder Max Pressure Force Arm Arm Length L (mm) (Mpa) (kn) Length L (mm) Max Op. Pressure ILML14008 REV B Operating Pressure Cylinder Force (kn) L1-4X80-00 Arm Length L (mm) Max Arm Length L (mm) Max Op. Pressure ILML REV B = Non-Usable Range The tables and graphs show the relationship between arm length, operating pressure and clamping force. The arm lengths shown in parentheses (page D-5) are the usable length from the edge of the clamp body to the contact bolt. Tables include maximum operating pressure associated with the arm length shown in the header rows of the table. The column on the right of the table is the maximum arm length allowed at the associated operating pressure. Operating the clamp in the non-usable range will damage the clamp and void product warranty. Vektek August

16 TuffCam 7 MPa Swing Clamp Arms Clamping Force Graphs L1-4X25-00 (25mm Bore) Non- Usable Range Cylinder Force L = 30 (10) L = 45.5 (25.5) L = 60 (40) L = 75 (55) L = 86 (66) L = 100 (80) L = 120 (100) L = 150 (130) Operating Pressure ILML REV B L1-4X32-00 (32mm Bore) Non-Usable Range Cylinder Force L = 30 (6.5) L = 40 (16.5) L = 49 (25.5) L = 60 (36.5) L = 80 (56.5) L = 98 (74.5) L = 120 (96.5) L = 150 (126.5) Operating Pressure ILML REV B D L1-4X40-00 (40mm Bore) Non-Usable Range Cylinder Force L = 35 (7) L = 45 (17) L = 58.5 (30.5) L = 70 (42) L = 90 (62) L = 110 (82) L = 155 (127) L = 200 (172) Operating Pressure ILML REV B L1-4X50-00 (50mm Bore) Non-Usable Range Cylinder Force L = 42 (7) L = 55 (20) L = 68 (33) L = 90 (55) L = 115 (80) L = 142 (107) L = 170 (135) L = 200 (165) Operating Pressure ILML REV B L1-4X63-00 (63mm Bore) Non-Usable Range Cylinder Force L = 50 (7.5) L = 65 (22.5) L= 80.5 (38) L = 110 (67.5) L = 140 (97.5) L= 176 (133.5) L = 210 (167.5) L = 250 (207.5) L1-4X80-00 (80mm Bore) Non-Usable Range Cylinder Force L = 60 (8.5) L = 89.5 (38) L = 120 (68.5) L = 150 (98.5) L = 180 (128.5) L = 220 (168.5) L = 260 (208.5) L = 300 (248.5) Operating Pressure ILML REV B Operating Pressure ILML REV B How to Use the Clamping Force Graphs 1) Start by choosing the arm length you need for your application. 2) Then move along the line and select the clamping force and operating pressure or operating pressure and clamping force needed. Example: Using a L1-4X25-00 with a 30 mm lever (10mm usable length); the clamping force would be 1.5 kn at 5.5 MPa kn L1-4X25-00 (25mm Bore) Non- Usable Cylinder Force L = 30 (10) L = 45.5 (25.5) L = 60 (40) L = 75 (55) L = 86 (66) L = 100 (80) L = 120 (100) L = 150 (130) MPa Operating Pressure ILML14009 REV B Vektek August 2016

17 TuffCam 7 MPa Swing Clamp Arms Double Ended Rocker Arm for Clevis Models TuffCam 7 MPa Double Ended Rocker Arm Purchase arms using Model Numbers in the table. Dimensions to make your own. D-6 7 MPa Double Ended Rocker Arm Dimensions Model No. L L L L L L Cylinder Capacity (kn) (mm) A B C D E F G H J K L M ILML91403 REV A Vektek August

18 TuffCam 7 MPa Swing Clamp Concept Versatile Double Acting Clevis Plunger Swing Clamps TuffCam Top Flange Swing Clamps and Clevis Plunger Bottom Flange Swing Clamps working together. Adjustable clamping force. Use double ended Rocker Arms to apply equal force on two surfaces of different heights. Allowable arm travel for work piece deviation is ± 10 Six standard arm positions available in 30 increments. Clamp position repeatability is ±0.25 and Swing angle at 90 ±3 Can be manifold mounted or plumbed. D-7 Swing Clamp Clevis Plunger Swing Clamp Clevis Plunger Clevis Plunger Swing Clamp Vektek August 2016

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