Machine Screw JACKS
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Machine Screw JACKS Joyce/Dayton offers Machine Screw Jacks in several designs including: • Translating • Keyed for non-rotation • Keyed for traveling nut (KFTN) • Double clevis • Trunnion A guide for ordering is on pages 20 and 21. 2D and 3D models available on website • Ordering information on pages 20 and 21

MACHINE SCREW JACKS ORDERING INFORMATION Instructions: Select a model number from this chart. Miniature WJ1125 WJ1130 WJ1135 WJT1150 RWJT1150 WJ3225 WJ3230 WJ3235 WJT3250 RWJT3250 DWJ1125* DWJ1130* DWJ3225* DWJ3230* Important Note: *Not self-locking, may lower under load. Brake motors or external locking systems are recommended. D: Double Lead Screw R: Reverse Base Jack, (only available on 2-ton and 50-ton jacks). Sample Part Number: WJT65U1N-18.50-STDX-STDX-B Jack Configuration Left Side Shaft Code Additional Options Right Side Shaft Code (see below) X=Standard Jack, no additional options...

MACHINE SCREW JACKS SHAFT CODES Instructions: Select the appropriate shaft codes for both right and left hand shafts. One shaft code must be specified for each side Screw Stops (p. 10) and Boots (pp. 170-172) Screw stops are optional on machine screw jacks. When specified, the closed height of the jack and/or the protection tube length may be increased. When boots are added to machine screw jacks, the closed height of the jack may be increased. CNT0=0.001" Increments Note: Contact Joyce/Dayton for availability and options. Encoders and Electronic Limit Switches Recommended for self-locking...

MACHINE SCREW JACKS SPECIFICATIONS Capacity Screw Diameter (Inches) Thread Pitch/Lead .125 pitch Stub ACME .125 pitch .250 lead Stub ACME .125 pitch Stub ACME Worm Shaft Tare Worm Torque Gear Ratio Turns for (Inch Lbs.) 1" Travel Starting Torque (Inch Lbs.) Operating Torque (Inch Lbs.) Efficiency Screw Torque Basic Jack Rating % (Inch Lbs.) Weight Approx. (Lbs.) Jack Weight per Inch Travel (Lbs.) 2D and 3D models available on website • Ordering information on pages 20 and 21

MACHINE SCREW JACKS Important Note: Series DWJ double lead screw jacks and WJ500 screw jacks are not self-locking. Brake motors or external locking systems are recommended. (R): Reverse Base Jack. Tare Torque: Initial torque to overcome seal and nomial assembly drag. This value must be added to starting torque or operating torque values. Starting Torque: Torque value required to start moving a given load (dissipates to operating torque values once the load begins moving). Operating Torque: Torque required to continuously raise a given load at the input RPM listed. Note: If your actual input...

This chart includes a 2:1 Factor-of-Safety based on the Euler-Johnson equation for column loading (Oberg, Erik et al: Machinery’s Handbook, 24th Edition. c. 1992 Industrial Press Inc.) The horizontal portion of each line represents the jack’s maximum dynamic capacity. Under static conditions, these lines can be exceeded. Please contact factory for assistance. Screw Length (inches) Machine Screw Jack Column Loading Chart MACHINE SCREW JACKS COLUMN LOADING 2D and 3D models available on website • Ordering information on pages 20 and 21

MACHINE SCREW JACKS THREADED END MALE CLEVIS END END CONDITIONS (SHOWN AT MINIMUM CLOSED DIMENSIONS) Typical Plan View Right Side G38 KEYWAY BOTH ENDS Material Notes: Housing and protection tube are aluminum. Lifting screw is cold drawn steel (CDS), Input shaft (worm) is 416 S.S. Note: Drawings are artist's conception — not for certification; dimensions are subject to change without notice. 2D and 3D models available on website • Ordering information on pages 20 and 21 sales@joycedayton.com joycedayton.com

MACHINE SCREW JACKS END CONDITIONS (SHOWN AT MINIMUM CLOSED DIMENSIONS) Typical Plan View Right Side BOTH ENDS Left Side ^— KEYWAY BOTH ENDS Material Notes: Housing and protection tube are aluminum, lifting screw is 304 S.S. Input shaft (worm) is 416 S.S. Note: Drawings are artist's conception - not for certification; dimensions are subject to change without notice. 2D and 3D models available on website • Ordering information on pages 20 and 21 joycedayton.com sales@joycedayton.com

MACHINE SCREW JACKS Upright keyed THREADED END MALE CLEVIS END END CONDITIONS (SHOWN AT MINIMUM CLOSED DIMENSIONS) Typical Plan View KEYWAY BOTH ENDS Right Side Left Side Inverted keyed Material Notes: Housing and protection tube are aluminum. Lifting screw is 304 S.S. Input shaft (worm) is 416 S.S. Note: Drawings are artist's conception — not for certification; dimensions are subject to change without notice. 2D and 3D models available on website • Ordering information on pages 20 and 21

MACHINE SCREW JACKS Upright keyed THREADED END MALE CLEVIS END END CONDITIONS (SHOWN AT MINIMUM CLOSED DIMENSIONS) Typical Plan View LG. KEYWAY BOTH ENDS BOTH ENDS Material Notes: Housing and protection tube are aluminum. Lifting screw is cold drawn steel (CDS). Input shaft (worm) is CDS. Note: Drawings are artist's conception — not for certification; dimensions are subject to change without notice. Inverted keyed 2D and 3D models available on website • Ordering information on pages 20 and 21

MACHINE SCREW JACKS 1/16X45" CHAMFER i'**™ (SHOWN AT MINIMUM 1/4 03/8 CHAMFER CLOSED DIMENSIONS) Upright keyed THREADED END MALE CLEVIS END Typical Plan View Right Side Left Side KEYWAY BOTH ENDS Double Clevis Note: Drawings are artist's conception — not for certification; dimensions are subject to change without notice. 2D and 3D models available on website • Ordering information on pages 20 and 21

MACHINE SCREW JACKS 2 TON REVERSE BASE -1 SCREW 1/16X45° CHAMFER / /03/8 END CONDITIONS (SHOWN AT | | MINIMUM CLOSED DIMENSIONS) Upright keyed TYPE 2 TYPE 3 TYPE 4 LOAD PAD THREADED END MALE CLEVIS END Typical Plan View* Right Side KEYWAY BOTH ENDS "Ideal for DD motor mounts or for large diameter couplings. Note: Drawings are artist's conception — not for certification; dimensions are subject to change without notice. 2D and 3D models available on website • Ordering information on pages 20 and 21