Options, Accessories and CONTROLS Boots 170-172 Trunnion Mounts 173 Limit Switches 174-175 Potentiometers 176 Hand Wheels and Counters 177 Encoders 178 Special Finishes 179 Anti-backlash Devices 180-181 Miter Gear Boxes 182-184 Motor Mounts and Stock Motors 185 Pillow Blocks and Flange Blocks 186-187 Couplings 188-189 Shafting 190-191 Motor Starter Controls 192 VSPS Controls 193 Linear Actuator Controls 194 System Arrangements 195 Custom products are available • Contact Joyce/Dayton with your requirements

Options PROTECTIVE BOOTS For Translating and Keyed Design Machine Screw Jacks Joyce boots protect the screw from dust, dirt, and help maintain proper lubrication. Standard boots, fabricated from neoprene-coated nylon, also guard against moisture and corrosive contaminants. For travel distances up to 24 inches, boots are designed in 3 inches increments; for travel distances over 24 inches boots are designed for the specific travel distance (rise). Adding protective boots may increase the closed height of the jack depending on the end condition and the amount of travel (rise) required. For instance,...

Options PROTECTIVE BOOTS For Translating Design Ball Screw Jacks Joyce boots protect the screw from dust, dirt, and help maintain proper lubrication. Standard boots, fabricated from neoprene-coated nylon, also guard against moisture and corrosive contaminants. For travel distances up to 24 inches, boots are designed in 3 inches increments; for travel distances over 24 inches, boots are designed for the specific travel distance (rise). Adding protective boots may increase the closed height of the jack depending on the end condition and the amount of travel (rise) required. For instance, the chart...

Options PROTECTIVE BOOTS For Traveling Nut Design Machine and Ball Screw Jacks Joyce boots for Traveling Nut (KFTN, rotating screw) Jacks protect the screw from dust, dirt, and help maintain proper lubrication. Standard boots, fabricated from neoprene-coated nylon, also guard against moisture and corrosive contaminants. KFTN design jacks require an upper and lower boot to cover the rotating lifting screw. Diagrams of upright and inverted machine screw jacks are shown. Refer to the chart below to find the outside boot diameter, sleeve diameter, and the large and small diameter of the traveling...

Options TRUNNION MOUNTS Options – Trunnion Mounting Adapters Trunnion adapter plates bolt to the base of 2-ton through 20-ton jacks. They include precision bores for trunnion pins. These are frequently used in installations where a single* jack moves through an arc during operation. This jack is often configured with a motor mount or as a ComDRIVE®. Design Information The customer supplied trunnion pins should be ground to the “D” diameter shown in the table below. These pins should be made of steel with hardness greater than 30 HRC, a yield strength greater than 60,000 psi and be supported to...

OPTIONS LIMIT SWITCHES Rugged Joyce limit switches allow you to set precise travel limits and stops on Joyce jacks and actuators. They are also ideal in any application where rotary motion of a machine component can be used to indicate linear motion of another part. They are compatible with 2-ton through 150-ton jacks, actuators, electric cylinders, and integrated actuators. LS7 Limit Switch The LS7 limit switch has two Single-Pole, Double-Throw (SPDT) switch contacts. This switch offers a NEMA 4 rated enclosure — rated for dust, rain and hose-directed water. To set switches, first remove the...

OPTIONS LIMIT SWITCHES Rotation positions shown looking into end of shaft. Shaft Detail • Machine Screw Jacks (p. 18) • Bevel Gear Jacks (p. 148) Left Side Mounting • Machine screw ComDRIVEs (p. 45) • Bevel Ball Actuators (p. 159) • Stainless Steel Jacks (p. 58) BG and BB are available with all switch positions. • Metric Screw Jacks (p. 71) • Ball Screw Jacks (p. 80) • BallScrew ComDRIVEs (p. 102) • Electric Cylinders (p. 118) • Integrated Actuators (p. 135) 2, 3, 5, 10, 15 and 20-ton jacks are available with limit switch positions #1, #3 and #5. 25, 30, 35, 50 and 75-ton jacks are available...

OPTIONS Geared Potentiometers Joyce geared potentiometers are ideal for precise positioning applications. Using a 10-turn potentiometer, a signal is provided as either a change in resistance or current (when supplied with a 4-20 mA instrument transformer), which is proportional to the actual position of the screw. Geared potentiometers are commonly needed when PLCs or computers control jacks. Geared potentiometers are available on wormgear design jacks of 2-ton to 150-ton capacity. They include a slip clutch to prevent damage due to over-rotation but should always be inspected during installation...

Options Hand Wheels AND Counters Jack Capacity Hand Wheel Dimensions 6" Diameter 8" Diameter HW06 HW08 Counter Dimensions Jack Capacity Standard count increases as lifting screw extends. Longer wormshafts are available, contact Joyce/Dayton. Ordering information is found within specific product sections. Note: Drawings are artist’s conception — not for certification; dimensions are subject to change without notice. Custom products are available • Contact Joyce/Dayton with your requirements

Options Encoders Precise Position Sensing Joyce can equip machine screw jack models between 2-ton and 150-ton capacity, and electric cylinders with an encoder to allow accurate position sensing within increments of 0.001 inches. The encoder combines with your control system to monitor screw travel, number of revolutions, and travel limits. Right Side Dimensions Capacity Joyce’s shaft-mounted encoder offers easy installation, proven reliability and virtually maintenance-free operation. It includes a six-pin electrical connector, worm shaft coupling, and mounting adapter. Standard encoders are...

Options Finishes Finishes for Jack Housings • Gray enamel is the standard finish for Joyce jacks (2-ton and larger), actuators, electric cylinders, and integrated actuators. • Miniature jacks with aluminum housings (WJ250, WJ500, WJ1000, WJ51, WJ201, WBL51, WB51, WBL201, & WB201) are unpainted. • Standard epoxy (F2) is comprised of a two-component polyamide primer, and a two-component, low VOC, polyurethane topcoat (available in green and white). • Steel It epoxy finish provides a hard, non-toxic finish. It is comprised of a two-part, lead-free epoxy primer with a two-part polyamide epoxy topcoat...