Adjustable Speed Drives Zero-Max is a mechanical adjustable speed drive. Five sizes provide constant torque of 12 to 200 inch pounds throughout the speed range. The speed range is infinitely adjustable from 0 to 1/4 of the input speed under full rated load. This is generally stated as 0-400 RPM under full rated load assuming an input of 1800 RPM. For lower speed/higher torque applications, some Zero-Max Drives are available with in-line or right angle gearheads. Some Zero-Max Drives may be purchased with standard electric motors or they may be connected to any rotating power source up to 2000 RPM. Speed adjustments are easily made by moving a lever control through an arc or turning the hand wheel of a screw type control. In either case, precise speed control settings are possible. Over 1 million Zero-Max Drives have been put to work in a wide variety of applications. They are available from distributors in all major markets throughout the world.

CD®Couplings CD® Couplings Combine the Best Features of Steel Disc and Elastomeric Couplings with Superior Torsional Stiffness. The Zero-Max CD® Coupling is a unique hybrid coupling, combining the best features found in both steel disc and elastomeric couplings. Through its open arc disc design and use of rugged composite materials, the coupling offers the high misalignment capacity found in many elastomeric couplings, but with higher torsional stiffness. Compared to steel disc couplings, these couplings offer superior damping and isolation of shock and vibrating loads, including elimination of fretting corrosion and a dramatic reduction of stress fractures at the bolt hole locations. The CD® Coupling also provides excellent chemical and moisture resistance in hostile environments which prove difficult or impossible for elastomeric or steel disc couplings. Heart of the CD® Coupling (U.S. Patents 5,221,232 and 5,387,157) Designed with the aid of finite Element Analysis and CAD technology, the Composite Flex Disc itself is the latest in state of the art coupling technology. The result is greater durability and longer operating life. The interaction of all components-disc packs, hubs, spacers and intermediate members have been carefully designed for maximum performance, even in harsh operating environments. Available as standard in; Single Flex, Double Flex, Double Flex Spacer and Floating Shaft Available in various Shaft Sizes, and in various torque ratings.

Crown Gear Drives Crown right angle gear drives are compact, reliable spiral bevel gear drives designed for a dependable, economical transfer of speed or power. These drives are constructed of high quality materials to help ensure maximum service life with a minimum of maintenance. They are compact and sealed from outside contaminants to provide smooth, quite operation, even in harsh industrial environments. Crown right angle gear drives are available in numerous standard models which include two and three-way versions and in 1:1 and 2:1 speed ratios. Standard Crown models are designed to meet a wide range of torque and shaft speed requirements. Special units can be designed to your specifications with shaft extensions, special machining of shafts or case modifications.

ETP® Bushings The Ideal locking Device for all Shaft-to-Hub Connections ETP® bushings are simple but unique locking devices proven through years of use. Their unique design and rugged quality make them superior to any other positioning/locking mechanism where keyways and tapers can either weaken or cause excess wear to shaft components. ETP® Bushings feature a double-walled sleeve, pressure ring and tightening screws. They slide onto a shaft easily, and securely lock in position most shaft-mounted motion control components. A solid connection between shaft and hub is formed when bushing screws are tightened. The bushing sleeve expands, forming a continuous, tight connection on shaft and hub. Count these Important Benefits: 1. Mount Shaft Components Easier, Faster and More Precisely 2. Provide a solid connection between shaft and hub without stress or wear to your components 3. Reduce Component wear and System Downtime 4. Small Mounting Diameters 5. Save Space and Materials 6. Flexibility of Application 7. Completely Adjustable Available in Shaft Sizes for .50” to 4” in various torque ratings.

H-TLC Torque Limiters The Intelligent Alternative to Friction type Torque Limiters The unique features in the Zero-Max H-TLC give the designer wider parameters in solving motion control problems. H-TLC is Durable. In many applications a torque limiter may wait months or years before it is required to disengage. All this time the unit nay be subjected to harsh environments. H-TLC will never rust or corrode because its major components are made from special polymer materials which are resistant to water, salts, mild acids and most pollutants, in a temperature range of -40 to 180 Fahrenheit. H-TLC is Dependable. It works on a spring loaded convex pin and detent design which reacts to overloads but not lubricants. H-TLC is Repeatable. When a friction-type torque limiter disengages, it generates heat which often alters it disengagement characteristics. It also wears the faces which require the unit be readjusted to counteract a constantly lowered release torque. However, the H-TLCs resilient Nylatron GS® and Delrin® materials don't build up, or retain, the kind of heat unique to friction designs. The Torque Setting is Adjustable. If operating conditions require periodic changes in torque settings, the H-TLC gives you that ability by adjusting the external compression bolts. The H-TLC can Trigger Automatic Alarms. An inexpensive actuating disk can activate a limit switch for remote indication of overload.

Phas-Lok Series A, B, C Phas-Lok Phasing devices for Accurate, Stepless Adjustment The Helland Phas-Lok is a precision two-piece unit. The center is keyed to your machine’s shaft thus providing a positive unalterable coupling. To the outer Phas-Lok section a sprocket, gear, cam, etc. is permanently attached. The outer section is attached to the center section with two bolts through slots in the center section. When these bolts are loosened, the two opposing set screws on the center section permit infinite adjustment on the sprocket or other driving device up to 6” in either direction. Once the precise alignment is made, you simply torque down the main bolts and the Phas-Lok rotates as one unit.

Roh’lix® Linear Actuators The Roh’lix Linear Actuator is a device that converts rotary motion into linear motion. The Roh’lix uses rolling element ball bearings that trace a helix pattern along the shaft, which produces a Rolling Helix, or Roh’lix for short. Available sizes have thrust capacities ranging from 5 to 200 lbs. (22 to 889 Newtons), shaft diameters ranging from 3/8 to 2 inches (8 to 50 mm), and leads ranging from 0.025 to 6.00 inches (.625 to 150mm)    Download PDF Catalog

Schmidt Couplings – Five schmidt styles for a wide range of applications …….. Offset Coupling - Provides the utmost in precision for parallel offset shafts. Transmits constant angular velocity and torque in a wide range of parallel shaft misalignments. Imposes no sideloads on shafts or bearings and eliminates radial shaft vibrations. No performance loss for increasing offset. It provides large floor space savings because of its compact design Inline Coupling - A linkage coupling designed with high torsional stiffness, this coupling accommodates small parallel shaft misalignments at constant angular velocity. Designed as a dropout coupling, it can be easily installed and offers excellent drive performance for low to medium shaft speeds and medium to high torque applications. 5-D Coupling - Provides parallel shaft misalignment and a - 5° angular misalignment with moderate axial shaft displacement capability. This coupling maintains constant angular velocity at all misalignment modes. Recommended for high torque, low rpm applications, the coupling has spherical roller bearings, which are easy to maintain. Flexible Coupling - Precision designed with zero backlash, this coupling is available in different disc stiffnesses. It can also be made into an inexpensive floating shaft coupling by using one coupling at each end of an intermediate shaft. Control-Flex® Coupling - Designed with a unique link-type, engineered resin disc member, this coupling overcomes the disadvantages of elastomer couplings by providing larger shaft misalignment capabilities without end-thrust or torsional vibrations. It provides constant velocity with less sideloads, is easy to install and requires no lubrication.

ServoClass Couplings Zero-Max New ServoClass Couplings are specifically designed to meet the precision positioning requirements and high reverse-load characteristics common to many of today’s AC and DC servomotor applications. ServoClass Couplings feature zero-backlash flexible metal discs and zero-backlash “keyless” clamp-type mounting hubs. This high-performance coupling has high torsional stiffness and low inertia to avoid system resonance. Yet it is remarkably flexible as a result of its double-flex-disc design, which provides exceptional misalignment capacity. This flexibility reduces reaction loads, thereby extending the operating life of the connected components while providing smoother system performance. Aided by Finite Element Analysis, the flexible discs accommodate higher torque, high speed and misalignment without premature failure due to fatigue or shock loads. In addition, ServoClass Couplings’ one-piece assembly and their lightweight make them the ideal solution for a variety of precision servomotor applications.

Torque-Tenders For Accurate Overload Protection in Mechanical Power Transmission Systems 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 train, motor and entire system. Steel springs within the unit force metal slides against each side of a hardened cast steel paw, holding it rigid with one end seated in a detent on the outer drive housing. During normal machine operation, power transfers into the central assembly through the rigidity held pawl and then rotates the outer drive housing and the driven shaft to which it is connected. If a Jam-up or some other malfunction occurs, excessive torque on the pawl overpowers the springs and the pawl rotates out of its detent. Thus the central assembly is disconnected from the outer drive housing. Once the overload is removed and speed reduces, the Torq-Tender resets itself automatically. Available in torque ranges from 3 inch pounds up to 1500 inch pounds.

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