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Adjustable Structural Supports Since 1951.

Timber Jack

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  • How to use Timber Jack - Ellis Manufacturing Co. TJ-4 TJ-6
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  • Timber Jack Beam Support - Ellis Manufacturing Co. TJ-4 TJ-6
  • Timer Jack / Screw Jack - Side | Ellis Manufacturing Co.
$40
per TJ-4

The Ellis Manufacturing Timber Jack/Screw Jack is the most compact jack Ellis Manufacturing Offers. The Ellis Timber Jack has a max load rating of up to 30,000 pounds and an adjustment range of 5".

Availability: In Stock


Item #

range of adjustment

safe load capacity

Weight

Price

TJ-4

5"

15,000

10 lb

$40

TJ-6

5"

30,000

13 lb

$45


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Product Overview



Specifications

Timber Jack 4x4 (TJ-4)
  • Load Capacity: 15,000 Lbs / 7.5 Tons
  • Overall Height: 9-1/8"
  • Base Plate 5"
  • Top Plate: 5-1/2"
  • Acme Screw Size: 1-1/4"
  • Range of Adjustment: 5"
  • Lifting Capacity: 4000 Lbs. / 2 Tons
TIMBER JACK 6X6 (TJ-6)
  • Load Capacity: 30,000 Lbs / 15 Tons
  • Overall Height: 10"
  • Base Plate 5"
  • Top Plate: 5-1/2"
  • Acme Screw Size: 1-1/2"
  • Range of Adjustment: 5"
  • Lifting Capacity: 4000 Lbs. / 2 Tons

 


Safe Working Loads

(based on use of southern yellow pine #1)
Total Shore Height (ft) Maximum load Capacity (2.5/1 safety factor, lbs.)
TJ-4 TJ-6
4' 15,000 30,000
6' 12,000 30,000
8' 7,200 30,000
10' 5,000 27,000
12' 3,000 20,000
14' 2,600 15,000
16' 0 11,500
18' 0 8,800
20' 0 6,000

How To Assemble:

  • Drill 1-3/8" x  6" (for TJ-4) or 1-3/4" x 6"  (for TJ-6) hole using auger or self feed drill bit into center of lumber to accept 1-1/4" or 1-1/2" Acme threaded screw.
  • Position Timber Jack so the Acme screw will slide into the predrilled hole in lumber.
  • Adjust the top plate so all 4 mounting holes line up within the boundaries of the lumber.
  • Drill 4 - 5/32"x1" holes through the mounting holes in the top plate and into the lumber.
  • Insert 4 - 1/4"x1-1/2" lag screws through the mounting holes in the top plate into the predrilled holes in the lumber and tighten.
  • Attach Ellis Purlin Splicer to Beam or Joist where support is desired.
  • Slip 4x4 or 6x6 lumber attached to the Timber Jack into the square tubing of the purlin splicer and secure with nails through the holes provided.
  • Adjustment to Timber Jack can be made by turning "U" shaped handle at bottom of screw.  Acme threads are greased for easy adjustment.
  • Attach base plate to a solid foundation through the 4 holes provided.

 



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