TuffCam™ Swing Clamps meet your demand for a product that can handle the stress and positioning requirements of high-speed or heavy arm applications. These tri-cam design clamps, with their patented Cam Follower Seat, can position and clamp in one second or less, handle large arms with ease and include the Clocking feature that dramatically reduces the time it takes to change arms for maintenance, replacement or fixture setup.
U. S. Patent Nos.
Frequently Asked Questions
When do you recommend the use of TuffCam™ Low Profile Swing Clamps over the standard product?
Sometimes there are applications where speed is essential, or massive arms are required. These applications may result in premature failure not due to defects in standard clamps, but from excesses in speed, mass or other requirements.When speed is essential, standard swing clamps (which last millions of cycles in ordinary applications) may not live up to life cycle expectations. When a standard swing clamp is damaged early in its life due to speed abuse, replacement with a TuffCam™ Low Profile Swing Clamp may be a way to maintain speed requirements and lengthen device life in the application.
When arm mass damages the swing mechanism of standard swing clamps, the single direction tri-cam design of the TuffCam™ Low Profile clamp strengthens the ball and cam link. The beefier design, capacity and reinforced rotation mechanism of the TuffCam™ Low Profile swing clamp could be your best solution.
Can I run the TuffCam™ Low Profile Swing Clamp at any speed I want?
No, there are restrictions. TuffCam™ Low Profile Swing Clamps are capable of approximately 2X the speed of standard swing clamps in prolonged use without damage. In the event that you need faster speeds or larger arms, please understand that the life of even the TuffCam™ swing clamp is reduced. Consult the Clamp Time and Flow Rate Chart to determine the speed for your application.
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 carbide balls and composite 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.
The demands on my fixture have changed and I am considering your TuffCam™ Low Profile Swing Clamps. Can I switch out TuffCam™ Low Profile for your standard Low Profile product?
Yes, the TuffCam™ Low Profile Swing clamps have the same mounting envelope as standard Low Profile swing clamps.
I want to use work supports with TuffCam™ Low Profile Swing clamps. Will the work supports cycle fast enough to keep up with the part change outs?
There will be some lag between the unclamp of swing clamps and the full release of pressure in any work support circuit. This is critical with fluid advance supports, as the circuit must have time to evacuate under low pressure to allow the plungers to retract for reloading the fixture. If speed is the issue in support retraction to coordinate with TuffCam™ Low Profile Swing Clamps, an air advance support must be used with the air circuit released prior to hydraulic circuit release. When the hydraulic circuit is released, the support will begin to immediately retract pushing only the air from the line rather than the higher viscosity hydraulic fluid.
I'm using a high volume pump and it is "blowing out" my swing clamps. Will TuffCam™ Low Profile Swing clamps take care of this problem?
High volume pumps often incorporate high volume accumulators. An accumulator will yield excessive flow, approaching instantaneous infinite flow, and is intended for dynamic loads. Hydraulic clamps are used to hold static loads, and are static circuits for which dynamic formulae are less applicable. Excessive flow may continue to damage clamps, (even TuffCam™ clamps)we recommend a pump designed for clamping applications or appropriate flow restriction.
It is important to hit my part in the exact place every time in my application, should I use your TuffCam™ Low Profile Clamps?
TuffCam™ Low Profile Swing Clamps will be more precise in their point of contact. Keep in mind that any draft angle or side forces will ultimately damage the cam tracks of any swing clamp and result in loss of precision. In the case of precision positioning, guide pins are recommended and may be implemented with a single-ended or double-ended arm.
How can I measure the clamp speed?
The maximum speed of a swing clamp ia applicable to both the clamp and unclamp function; as the momentum on the cam track and the cam follower apply to both movements. To approximate the speed of your application:
What defines a TuffCam™ Low Profile Swing Clamp?
The single direction tri-cam design of TuffCam™ produces the strength and reliability to support faster speeds and larger arms. This design also delivers noteably better accuracy and repeatability over other brands. The clocking feature, included on all styles, dramatically reduces the time it takes to change arms for maintenance, replacement or design set up.
Top Flange Long Stroke
Bottom Flange Long Stroke
Low Profile Top Flange
Low Profile Bottom Flange
Low Profile Cam Follower
We have added 3(three clocking features to the Vektek’s TuffCam™ swing clamp line. Customers have requested clocking features to help improve and speed-up arm changes.
A drill point on each clamp standardizes arm location at a particular position. An additional 2 (two) orientation drill points reside 120° out from that position and each other. Access to the positioning feature is through the back or side of the arm, making modification a snap for users. Each arm position can have its own specification.
TC LP SC 22kN
TC LP SC 33kN
Swing Restrictors add just one more element of flexibility when using Vektek Swing Clamps. Normally shipped with the swing angle set to 90°, you can have swing restrictors added to your clamps to limit the the arm swing to 30°, 45° or 60°of rotation. Restrictors that are factory installed on new product will be specially marked to avoid intermingling clamps with varying swing angles in your shop. Contact your Vektek Customer Service specialist should you need swing angles greater than 90°.
Clamp Time and Fluid Flow Rate Chart
- The above flows are maximum recommendations and clamp times are minimum recommendations.
- For upreach and double arms, use extended arm flows and times.
- The actual time to position the clamp will vary by custom arm configuration and may require customer testing in specific application to establish limits.
Swing Clamp Arm Length and Pressure Limitations
Step up to Tuffcam™ Technology with our Low Profile Swing Clamp Conversion Kit. If you have standard Vektek Low Profile Top or Bottom Flange units manufactured after 2004, you can upgrade your clamps to TuffCam™ today. The conversion brings you all of the speed, precision and strength benefits of TuffCam™ inside your old models.
If your old model number does not appear in the chart, call us, we may be able to help.