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
- 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.