Automatic Re-engagement Torque Limiters and Slip Clutches
Description
Automatic re-engagement torque limiters and slip clutches are mechanical devices designed to protect machinery from damage due to torque overloads. They function by disengaging the drive when the torque exceeds a predetermined limit, thereby preventing the transmission of excessive force that could harm the equipment. Once the overload condition is resolved, these devices automatically re-engage, allowing normal operation to resume without manual intervention.
Working Principle
Automatic re-engagement torque limiters and slip clutches operate by using friction or mechanical engagement to transmit torque under normal conditions. When the torque exceeds a set threshold, the device disengages, either by slipping or by mechanically separating the drive components. This disengagement prevents damage by stopping the transmission of excessive torque. Once the overload is cleared, the device automatically re-engages, restoring the connection between the drive components. This immediate response to torque overloads is crucial for protecting sensitive equipment and ensuring operational safety.
Applications
These devices are commonly used in applications where machinery is prone to jamming or sudden torque spikes. For example, they are employed in conveyor systems to prevent damage during mechanical jams, as they can disengage and re-engage automatically once the obstruction is cleared . They are also used in various industrial machines where personnel safety and equipment protection are priorities, such as in automated assembly lines and packaging machinery .
Advantages over other Torque Limiters and Slip Clutches
Automatic re-engagement torque limiters offer several advantages over other types of torque limiters, such as shear pin technology. They provide more precise disengagement accuracy, typically within +/-5%, compared to the +/-20% accuracy of shear pins . This precision is vital for protecting sensitive equipment. Additionally, the automatic re-engagement feature reduces maintenance downtime and eliminates the need for manual resetting or replacement of components like shear pins .
Limitations
One limitation of these devices is that they may not be suitable for applications requiring permanent disengagement after an overload, as they automatically re-engage once the overload condition is resolved. This could be a disadvantage in scenarios where manual inspection or intervention is necessary before resuming operation .
Considerations
When selecting automatic re-engagement torque limiters and slip clutches, several factors should be considered. Initial costs can vary depending on the complexity and capacity of the device. Operating expenses are generally low due to the reduced need for maintenance and replacement parts. Durability is typically high, but the accuracy of disengagement and re-engagement should be evaluated to ensure it meets the specific requirements of the application. Replacement and maintenance costs are minimized due to the automatic re-engagement feature, which reduces the need for manual intervention and component replacement .
from Hilliard Corporation (The)
The Hilliard High-Speed Overrunning Clutch provides positive engagement and high torque on demand. Featuring a unique roller-ramp design, the clutch when engaged transmits power via the precision-machined cam and roller assembly connected to the input shaft. A ball bearing at each end of the roll... [See More]
- Features: Bidirectional; Automatic Re-engagement
- Torque: 275.0 to 925.0
- Device: Overrunning
- Rotary Speed: 10000 to 16000
from Hilliard Corporation (The)
Friction Torque Limiters and Couplings are designed to slip during a torque overload, while still transmitting the adjusted torque. They provide dependable solutions to the problems of torque control and overload protection in power transmission equipment. [See More]
- Features: Adjustable Torque; Automatic Re-engagement
- Torque: 1.0 to 84.0
- Device: Slip clutch / Disengagement Torque Limiter
- Rotary Speed: 1800
from Hilliard Corporation (The)
Hilliard Sprag Clutches are designed for overrunning, backstopping and indexing applications. This clutch is a freewheeling device with an inner race and an outer race, either of which can be the input or output member. The input can drive the output in a chosen direction and permit the output to... [See More]
- Features: Automatic Re-engagement
- Torque: 275.0 to 36600.0
- Device: Overrunning; Freewheeling; Backstop
- Rotary Speed: 375 to 3600
from GMN Bearing, USA Ltd.
Free-wheel clutch, roller ramp technology [See More]
- Features: Automatic Re-engagement
- Torque: 11.0
- Device: Freewheeling
- Engagement: Roller Ramp
from KTR Corporation
The solid safety system KTR-SI is available in different types (standard and compact) and operating principles (ratchet, synchronous, fail-safe, disengaging), providing for overload protection up to 3,100 Nm. Product features. Backlash-free overload systems with declining spring characteristic. [See More]
- Features: Adjustable Torque; Zero-Backlash; Automatic Re-engagement
- Torque: 2.2 to 2286.1
- Device: Slip clutch / Disengagement Torque Limiter
- Rotary Speed: 4000
from WITTENSTEIN, Inc. (formerly alpha gear drives)
Compact and maintenance-free couplings from Wittenstein offer you long lifespan in your application, whether used for drive applications or for mounting on our servo gearheads. With multiple mounting possibilities, easy installation and low-backlash, our selection provides a perfect fit for whatever... [See More]
- Features: Adjustable Torque; Zero-Backlash; Automatic Re-engagement
- Engagement: Ball Detent
- Device: Slip clutch / Disengagement Torque Limiter; Freewheeling (optional feature)
- Shaft: In-line
from Ringfeder Power Transmission USA Corporation
GERWAH's permanent magnetic hysteresis coupling from the 'HKD' series consists of two separate unsupported halves. The coupling is connected with the shaft by means of clamping hubs. Thanks to its pioneering concept, HKD transmits torque smoothly in a 'sliding' manner which is completely wear-free. [See More]
- Features: Adjustable Torque; Automatic Re-engagement
- Torque: 0.1 to 3.7
- Device: Slip clutch / Disengagement Torque Limiter
- Engagement: NonContact
from Zero-Max
H-TLC operates on the same basic principle as Torq-Tender, except the torque setting Is adjustable and it uses polymer materials in its major components to resist corrosion. If operating conditions require periodic changes in torque settings, the H-TLC gives you that ability. Simply adjust the... [See More]
- Features: Adjustable Torque; Bidirectional; Automatic Re-engagement; Slip Indication
- Torque: 40.0 to 150.0
- Device: Slip clutch / Disengagement Torque Limiter
- Engagement: Pawl Detent
from Mountz, Inc.
Designed to be used in-line to limit torque for hand (static) applications. Can also be used as an overload protection device on most applications where measuring a static overload is needed. Provides accurate process control as the unit prevents a fastener or bolt from being under and over... [See More]
- Features: Bidirectional; Automatic Re-engagement
- Torque: 0.5 to 3.8
- Device: Slip clutch / Disengagement Torque Limiter
- Shaft: In-line
from KTR Corporation
SYNTEX ® is a safety system operating with positive locking suitable for torques up to 525 Nm. The component transmitting the torque is a punched disk spring (protected by patent). The design of the coupling ensures short reaction times with high repeating accuracy. Due to the special design it... [See More]
- Features: Adjustable Torque; Zero-Backlash; Automatic Re-engagement
- Torque: 4.4 to 295.0
- Device: Slip clutch / Disengagement Torque Limiter
- Rotary Speed: 1500
from Ringfeder Power Transmission USA Corporation
A slim design and flexible mounting possibilities: the magnetic hysteresis couplings from the 'HLV' series can be used for many purposes. Their rated torque level can be adapted individually thanks to a user-friendly scale. On request, HLV is available in stainless steel, too. Especially in the... [See More]
- Features: Adjustable Torque; Automatic Re-engagement
- Torque: 0.3 to 2.9
- Device: Slip clutch / Disengagement Torque Limiter
- Engagement: NonContact
from Zero-Max
Torq-Tenders are positive drive couplings which provide accurate overload protection in many mechanical power transmission systems. When a jam-up or excess overload occurs, Torq-Tenders disengage motor drives. Their effective, versatile design, proven through 25 years of use, protect your drive... [See More]
- Features: Bidirectional; Automatic Re-engagement; Slip Indication
- Torque: 20.0 to 83.3
- Device: Slip clutch / Disengagement Torque Limiter
- Rotary Speed: 1800
from Mountz, Inc.
Designed to be used in-line to limit torque for hand (static) applications. Can also be used as an overload protection device on most applications where measuring a static overload is needed. Provides accurate process control as the unit prevents a fastener or bolt from being under and over... [See More]
- Features: Bidirectional; Automatic Re-engagement
- Torque: 0.5 to 3.8
- Device: Slip clutch / Disengagement Torque Limiter
- Shaft: In-line
from KTR Corporation
SYNTEX ® is a safety system operating with positive locking suitable for torques up to 525 Nm. The component transmitting the torque is a punched disk spring (protected by patent). The design of the coupling ensures short reaction times with high repeating accuracy. Due to the special design it... [See More]
- Features: Adjustable Torque; Zero-Backlash; Automatic Re-engagement
- Torque: 4.4 to 295.0
- Device: Slip clutch / Disengagement Torque Limiter
- Rotary Speed: 1500
from Ringfeder Power Transmission USA Corporation
The compact design and the flexible mounting possibilities of GERWAH's magnetic hysteresis coupling 'HSV' open up a wide field of possible applications. Its innovative concept qualifies this element for use in bottle capping machines as well as in roll-up and unroll systems, and in test engineering. [See More]
- Features: Adjustable Torque; Automatic Re-engagement
- Torque: 0.3 to 2.9
- Device: Slip clutch / Disengagement Torque Limiter
- Engagement: NonContact
from Mountz, Inc.
Designed to be used in-line to limit torque for hand (static) applications. Can also be used as an overload protection device on most applications where measuring a static overload is needed. Provides accurate process control as the unit prevents a fastener or bolt from being under and over... [See More]
- Features: Bidirectional; Automatic Re-engagement
- Torque: 3.8 to 7.1
- Device: Slip clutch / Disengagement Torque Limiter
- Shaft: In-line
from KTR Corporation
SYNTEX ® is a safety system operating with positive locking suitable for torques up to 525 Nm. The component transmitting the torque is a punched disk spring (protected by patent). The design of the coupling ensures short reaction times with high repeating accuracy. Due to the special design it... [See More]
- Features: Adjustable Torque; Zero-Backlash; Automatic Re-engagement
- Torque: 4.4 to 295.0
- Device: Slip clutch / Disengagement Torque Limiter
- Rotary Speed: 1500
from Ringfeder Power Transmission USA Corporation
The permanent magnetic synchronous coupling 'MKD' consists of two separate halves which have to be supported by the customer and are then telescoped. The special feature of MKD: the maximum transmittable torque can be changed by modifying the hub submergence. At overload status, the coupling will... [See More]
- Features: Adjustable Torque; Automatic Re-engagement
- Torque: 0.9 to 110.6
- Device: Slip clutch / Disengagement Torque Limiter
- Engagement: NonContact
from KTR Corporation
SYNTEX ® is a safety system operating with positive locking suitable for torques up to 525 Nm. The component transmitting the torque is a punched disk spring (protected by patent). The design of the coupling ensures short reaction times with high repeating accuracy. Due to the special design it... [See More]
- Features: Adjustable Torque; Zero-Backlash; Automatic Re-engagement
- Torque: 4.4 to 295.0
- Device: Slip clutch / Disengagement Torque Limiter
- Rotary Speed: 1500
from KTR Corporation
The core of the overload system is formed by the idle rotation elements. In case of overload they uncouple the driving and driven side while protecting the drive train from damages. After eliminating the overload, the rotation segments are manually re-engaged so that the drive is released again. [See More]
- Features: Adjustable Torque; Automatic Re-engagement
- Torque: 3.7 to 6047.2
- Device: Slip clutch / Disengagement Torque Limiter
- Engagement: Plate / Disc
from KTR Corporation
The core of the overload system is formed by the idle rotation elements. In case of overload they uncouple the driving and driven side while protecting the drive train from damages. After eliminating the overload, the rotation segments are manually re-engaged so that the drive is released again. [See More]
- Features: Adjustable Torque; Automatic Re-engagement
- Torque: 3.7 to 6047.2
- Device: Slip clutch / Disengagement Torque Limiter
- Engagement: Plate / Disc
from KTR Corporation
For exact dimensioning torque limiters latest simulation and calculation programmes are available. Therefore let us know many data of your drive. The more precise these data are, the more precise are the results of calculation. Make use of this possibility and discuss with us the application in... [See More]
- Features: Adjustable Torque; Automatic Re-engagement
- Torque: 1.5 to 6047.2
- Device: Slip clutch / Disengagement Torque Limiter
- Engagement: Plate / Disc
from KTR Corporation
For exact dimensioning torque limiters latest simulation and calculation programmes are available. Therefore let us know many data of your drive. The more precise these data are, the more precise are the results of calculation. Make use of this possibility and discuss with us the application in... [See More]
- Features: Adjustable Torque; Automatic Re-engagement
- Torque: 1.5 to 6047.2
- Device: Slip clutch / Disengagement Torque Limiter
- Engagement: Plate / Disc