Joyce/Dayton Corp. Operation and Maintenance Manual for Joyce/Dayton Machine Screw Jacks The product described in this catalog is for industrial use only. It may not be used to lift or support people without prior written approval from the Joyce/Dayton Corp. The recommendations in this manual for installation, operation and maintenance must be followed to ensure safe use. All persons responsible for the installation and use of Joyce Jacks must be familiar with the contents of this manual.
Table of Contents Section I – General Information 1-1 1-2 1-3 1-4 1-5 1-6 Contact Joyce/Dayton ............................................................................................. 2 Purpose and Scope.................................................................................................. 2 Receipt of Product ................................................................................................... 2 Warranty.........................................................................
components thereof which are returned to seller freight prepaid and which are defective in material or workmanship. Products or parts or components thereof, which are repaired or replaced by seller, will be returned to buyer freight collect. This warranty is not intended to cover consumer products, as defined in the Magnuson-Moss Warranty-Federal Trade Commission Improvement Act, 15 U. S. C. Sections 2301-12, which are purchased by buyer for purposes other than resale.
7. When fastening the load to a jack, make sure the jack is in the retracted position. This positions the load accurately with respect to the jack screw centerline. Never pull the screw to one side to make connection with your structure. Fully extend the jack to make sure the load is aligned with the lifting screw. 8. All jacks should be mounted with S.A.E. Grade 8 bolts or equivalent. 9. Torque all mounting bolts in a symmetric pattern to avoid damage to the sleeve. 10.
2-2 Repair Parts Obtain repair parts by calling Joyce/Dayton Customer Service at (800) 523-5204, (937) 2946261, (937) 297-7371 (facsimile) or by email sales@joycedayton.com. You may also call your local sales representative. When ordering repair parts, please supply the serial number (located on the jack nameplate). Recommended repair parts for rebuild or spares. Refer to Section 3-1 Exploded View and Section 3-2 Parts List. A. (1) Thrust bearing – Item 4 B. (1) Worm gear – Item 5 C.
3. 4. 5. 6. 7. stops on the screw, these will need to be removed before the lifting screw is removed from the jack. If the jack does not have stops, the lifting screw can be removed by simply unthreading it from the wormgear. Remove the thrust bearings (item 4) and the wormgear (item 5) from the sleeve. The bearing cones may be pressed onto the wormgear. Keyed jacks have a keyway cut the length of the lifting screw (item 35).
2-6 100 and 150-Ton Jacks 1. The assembly of the 100 and 150-ton jack varies from the smaller machine screw jacks. The 100 and 150-ton jacks utilize a base plate and a sleeve that are shimmed and bolted together, instead of a sleeve and sleeve cap. 2. In a translating jack, the screw (item 14) should be removed first, and then the sleeve can be unbolted from the base. 3. In a KFTN model, the base and sleeve may be unbolted first. 4.
3-1 Exploded View PARTS LIST FOR ALL JOYCE STANDARD WORM GEAR SCREW JACKS Models "WJ", "DWJ", "WJT", "SWJ", And "DSWJ" Traveling Screw, Traveling Nut And Keyed For Traveling Nut Versions (Upright Styles shown for purpose of illustration) 8
3-2 Parts List – Translating and KFTN jacks Parts list Table Item Translating Item KFTN- Keyed For Traveling Nut 1 1a 2 3 4 5 6 7 8 9 10 11 12 13 14 15 17 18 19 20 21 22 23 24 26 27 28 29 30 31 32 33 34 35 36 Sleeve Sleeve (WJ250 – WJ201 jack) Sleeve Cap Bearing Cap (2) Thrust Bearing Worm Gear Worm Shaft Bearing (2) Worm Shaft Seal (2) Shims Bearing Cap Lockwasher (6-8) Bearing Cap Screw (6-8) Protection Tube Worm (Input Shaft) Set Screw – sleeve cap (4) Lifting Screw Protection Tube Adapter (Inverte
3-3 Specifications WJ250 WJ500 WJ1000 WJ51 WJ201 (R)WJT62 (R)WJT122 (R)WJT242 (R)WJT252 D(R)WJ62 D(R)WJ122 D(R)WJ242 WJ63 WJ123 WJ243 WJ253 DWJ63 DWJ123 DWJ243 WJT65 WJT125 WJT245 WJT255 DWJ65 DWJ125 DWJ245 Capacity 250 lbs. 500 lbs. 1,000 lbs. 1 TON 2 TON 2 TON 3 TON 3 TON 5 TON 5 TON 5 TON 1 1 1/2 1 1/2 1-1/2 Model Number Lifting Screw Diameter (inches) 1/2 1/2 5/8 3/4 1 1 1 Thread Pitch/Lea d (inches) .125 Pitch Stub Acme .125 Pitch .250 Lead Stub Acme .
3.3 Specifications (continued) Model Number WJ810 WJ2410 WJ2510 WJ2510 DWJ810 DWJ2410 WJ815 WJ2415 WJ2515 DWJ815 DWJ2415 WJ820 WJ2420 WJ2520 DWJ820 DWJ2420 Capacity 10 TON 10 TON 10 TON 15 TON 15 TON 15 TON 20 TON 20 TON 20 TON Lifting Screw Diameter (inches) 2 2 2 2 1/4 2 1/4 2 1/4 2 1/2 2 1/2 2 1/2 Thread Pitch/Lead (inches) .500 Pitch Acme .25 Pitch Acme .333 Pitch .666 Lead Acme .500 pitch Acme .250 pitch .333 Pitch .666 Lead Acme .500 pitch Acme .25 pitch Acme .
3-3 Specifications (continued) Model Number WJ1125 WJ3225 DWJ1125 DWJ3225 WJ1130 WJ3230 DWJ1130 DWJ3230 WJ1135 WJ3235 (R)WJT1150 (R)WJT3250 WJ1175 WJ3275 WJ12100 WJ36100 WJ12150 WJ36150 WJ50250 Capacity 25 TON 25 TON 30 TON 30 TON 35 TON 50 TON 75 TON 100 TON 150 TON 250 TON Lifting Screw Diameter (inches) 3 3/8 3 3/8 3 1/2 3 1/2 3 3/4 4 1/2 5 6 7 9 Thread Pitch/Lead (inches) .666 Pitch Stub Acme .666 Pitch Acme .666 Pitch Mod. Square. .750 Pitch Mod. Square.
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3-4 Serial number and Maintenance Date Maintenance Performed Initials Joyce Dayton Serial Number Tag . Contact Joyce Dayton Corporation and provide the serial number to obtain the product information needed for maintenance, repair and reorder. Joyce/Dayton Corp P.O. Box 1630 Dayton, Ohio 45401 Phone (800) 523-5204 (U.S. & Canada); (937) 294-6261 Fax (937) 297-7173 www.joycedayton.com E-mail: sales@joycedayton.
Joyce/Dayton Corp P.O. Box 1630 Dayton, Ohio 45401 Phone (800) 523-5204 (U.S. & Canada); (937) 294-6261 Fax (937) 297-7173 www.joycedayton.com E-mail: sales@joycedayton.
