Zero-Max, Inc.    Minneapolis, MN 55441 5537
Mar 12, 2012 Available in models capable of handling up to 37,000 foot-pounds (50,000 Nm) of torque, Torque Limiters protect drive trains, gearboxes, and generators from excessive peak loads, minimize risk of breakdowns, and help extend system life. Features include factory preset torque and max bore sizes up to 5½ in. or 140 mm with or without keyway. Operational from -40 to +80°C, maintenance-free products are available in custom designs for all OEM applications.

Nexen Group    Vadnais Heights, MN 55127
Oct 05, 2009 Using ball/detent interface and proximity sensor, single-position TL Series immediately disengages machine shaft when excessive torque or machine jam occurs, protecting downstream equipment and product from damage. By utilizing pneumatic actuation, units facilitate remote trip-out torque adjustment via air regulator, allowing overload protection while machine is in use. Limiters are available in both semi-open and totally enclosed nickel-plated models.

Watlow    St. Louis, MO 63146
Apr 16, 2009 Offering 1 universal input and option for up to 2 outputs, EZ-ZONE® PM Express is available in 1/32 or 1/16 DIN panel mount package as PID process controller or dedicated over and under-temperature limit controller. Supported by 2 menus, user interface makes product suited for basic applications and user levels. Standard bus communications provide product configuration via PC communications with EZ-ZONE Configurator as well as connectivity to all other EZ-ZONE products.

Parker Hannifin Corp    Greenfield, TN 38230
Mar 03, 2009 Designed for open circuit mobile equipment and industrial applications, P1/PD Variable Displacement Pumps are rated for continuous operation at 2,600 rpm and pressures to 4,060 psi. Torque limiter adjusts flow in circuit to keep prime mover from stalling under heavy loads. Available in 5 configurations, single spring unit monitors pressure and displacement as measured by pump's hanger angle. As pressure rises, flow is reduced according to zero adjustment spring rate.

Mach III Clutch Inc.    Ludlow, KY 41016
Nov 25, 2008 Featuring keyed input bore and output shaft, NEMA C-Face Friction Torque Limiter provides overload protection in 4 sizes for 56C to 213TC NEMA motor frames. Multiple facings are spring engaged to drive output shaft until pre-set torque range is exceeded. Torque limiter will then slip under load until jam is cleared or manual or sensor-triggered shutdown occurs. Enclosed in aluminum housing, limiter is available with corrosion-resistant and food-safe finishes.

Omega Engineering, Inc.    Stamford, CT 06907
Jul 31, 2008 Offering independent shutdown for thermal processes, Series CN63500 temperature limit controller has dual 4-digit displays that allow simultaneous viewing of process temperature and limit setpoint. Unit has plastic case with tinted front panel that meets NEMA 4X (IP65) specifications and accepts signals from variety of temperature sensors. Comprehensive programming allows it to meet wide variety of application requirements.

Dwyer Instruments, Inc.    Michigan City, IN 46361
May 09, 2007 Offering 15 A relay alarm output, FM approved Series TSF can be used as high or low limit alarm. Unit allows user to select automatic or manual reset along with 10 other parameters. Control includes built-in reset button on front panel or can accept external reset.

Watlow    St. Louis, MO 63146
Aug 04, 2006 EHG SL10 process controller and safety limit combines heater with temperature controller, 2 thermocouple sensors, power switching device and alert lights for at-temperature notification, and power and out-of-range (high/low temperature) alert. Controller is upgradeable and field adjustable. With display only, communications, and combined modules available, device is suited for foodservice, life sciences, packaging, and semiconductor applications.

Ogura Industrial Corp.    Somerset, NJ 08873
Mar 03, 2006 Suited for office automation equipment, torque-limiting Series OPL includes 9 different models with torques ranging from .17-3.52 lb-in. Units create torque magnetically, so there is minimal amount of stick slip. Sealed design prevents wear particles from contaminating machine and particles from machine contaminating slip clutch. Customers can order any length shaft they need with any snap ring or D cut dimensions.

Nexen Group    Vadnais Heights, MN 55127
Feb 22, 2006 Mechanical Torque Limiter isolates driving from driven elements within milliseconds. While offering precise overload protection, rotary motion control product is torsionally rigid and provides double bearing support of pulley/sprocket. Product is factory-set to lowest torque within range and can be adjusted without being removed from application. Areas of use include machine tools, automation equipment, industrial robots, and servo/dc motor drives.

RKC Instrument    South Bend, IN 46628
Feb 24, 2005 Featuring IP66 dustproof/waterproof front panel rating, SA100L provides circuit protection in processes with safety concerns or where product may be affected in over or under temperature condition. Unit has selectable high or low limit, peak ambient reading, and over-temperature hour meter. It monitors peak value and amount of time control remains over temperature, and can be viewed by operator from front panel or via digital communication by PLC or computer system.

Danaher Motion/Danaher Industrial Controls    Gurnee, IL 60031
Jan 26, 2005 Plus Series 1/16, 1/8, and ¼ DIN Controllers shut down process if parameters exceed preset limits. To prevent safety hazards and equipment damage in oven/furnace, plastics, and packaging industries, they have latching relay that cannot be reset until process is in safe condition. Units offer auto-detection of hardware modules, front panel HMI with dual display, and PC configuration software. A 10 V SSR drive output enables user to drive up to 3 SSR/SCR outputs.

Joyce/Dayton Corp.    Dayton, OH 45401-1630
Sep 24, 2004 Integrated with Steelbelt Speed Reducers, adjustable Torque Limiters are mechanical, using slip clutch assembly in oil bath. Clutch slips automatically to minimize downtime, and allows reducers to return to normal operation after obstruction is removed. Limiters are adjustable from 0 lb-in. up to 25% above full torque rating. They are suited for conveyors, gate operators, overhead doors, bottling machines, and packaging machines.

Ringfeder Power Transmission USA Corporation    Westwood, NJ 07675
Apr 08, 2004 Bidirectional Type BD torque limiters protect rotating machines and components from damage in case of jam/overload. Adjustable overload settings cause unit to disengage mechanically when overload occurs and trip a limit switch or signaling device. BDR units have automatic random reset, while BDS units offer automatic single position reset and use rollers instead of balls. Random reset or single position units are available in sizes from 44-35,000 lb-in.

Fuji Electric Corp. Of America    Saddle Brook, NJ 07663
Dec 09, 2003 Model PYL can be configured as high-limit or low-limit controller. It features universal input, timer to clock duration time the set-point has been exceeded, and register to retain max temperature. Two alarm outputs, including retransmission output and communication function, are available as options. Controller comes in 1/16 DIN package with splash-proof and dust-proof front panel and 4-digit LED display.

Nexen Group, Inc.    Vadnais Heights, MN 55127
Sep 18, 2003 Torque Limiter disconnects main power source from down-stream components in event of torque overload or product jam. When overload occurs, proximity sensor embedded in air chamber sends signal to pneumatic, directional control valve to exhaust air from air chamber, which disconnects and protects system. Remote trip-torque setting with air regulator eliminates need for manual torque adjustments. Semi-open and totally enclosed units are available.

Ogden Mfg. Co.    Arlington Heights, IL 60005
Nov 14, 2002 Model ETR-9040 protects equipment, materials, and personnel from over-temperature process conditions. True back-up system can be put in place when unit is used with dedicated sensor and contactor. Universal Input allows product to be used in various temperature, pressure, flow, and control applications. Optional port provides additional functions: programmable alarm, RS-485 communications, DC power supply, limit annunciator, or event input.

Zero-Max, Inc.    Plymouth, MN 55441 5509
Jul 02, 2002 Adjustable H-TLC torque limiters trigger alarms or automatic system shutdown. There are 6 sizes and 2 models in bore sizes from 0.250 through 1.000 in. Models handle torque from 4 to 500 lb-in. Design operates on spring-loaded convex pin and detent that reacts to overloads but not to contaminants. Units withstand corrosive environments and have effective temperature range of -40 to +180°F.

Mid-West Instrument    Sterling Heights, MI 48314
Nov 14, 2001 Model 220 differential gauge/switch is available with pressure-containing elements in aluminum or 316 stainless steel. Differential pressure ranges from 0 to 5 psid to 0 to 100 psid with safe working pressure up to 4000 psid. Additional elastomers are available to suit multiple configurations for various media. Unit is available in 1 or 2 switch and relay configurations, with additional switch and relay options. Its enclosure is explosion-proof.

Zero-Max, Inc.    Plymouth, MN 55441 5509
Nov 09, 2001 H-TLC torque limiter has consistent disengagement, can withstand corrosive environments, and triggers alarms or automatic system shutdown when overload conditions occur. It operates on spring-loaded convex pin and detent that reacts to overloads but not to contaminants like soil, dirt and lubrication. Unit withstands salt, pollutants, mild acids, corrosive moisture of all kinds, and oily environments. It works in temperatures of -40 to 180°F.