Jammy TSAP780 Ramp Door Spring Assist Kit – 80 lb Torsion Spring
Part Number / SKU: TSAP780
Complete spring assist assembly for 7-foot ramp doors – includes 80 lb spring, 12? capacity drums, 150? stainless cables, and mounting hardware.
| Part Number |
Spring Rating |
Cable Length |
Drum Capacity |
| TSAP780 |
80 lb (Right-Hand / Clockwise) |
150? × 1/8? Stainless Steel |
12? Cable Capacity |
About This Product
The Jammy TSAP780 Ramp Door Spring Assist Kit is engineered for enclosed trailers with 7-foot-wide ramp doors. Designed to help offset door weight, it improves safety and ease of use by providing controlled assistance when opening and closing the ramp.
Product Features
- Includes one 5.5 × 50 × 700 mm (?28?) torsion spring rated at 80 lb, with clockwise (right) wind direction
- Two 12? capacity cable drums (left and right)
- Two 150? × 1/8? stainless steel winding cables
- Roof-mount bearing brackets, nylon rollers, and full hardware kit
- Bar for mounting not included — buyer must supply proper spring bar
- Rated to assist doors up to ~160 lb total load (or ~80 lb per hinge) per manufacturer spec
Important Clarifications
-
Drum sizing: “12? cable drums” means capacity for 12 feet of cable travel, not physical drum diameter.
-
Cable length: Each kit includes full 150? cables. If you receive shorter length, report immediately.
-
Compatibility caution: Always match by door weight, not just width.
Specifications
- Spring: 5.5 × 50 × 700 mm (?28?), 80 lb torsion spring
- Wind direction: Clockwise / Right-Hand
- Cables: 150? × 1/8? stainless steel (pair)
- Drum capacity: 12? cable travel
- Mount: Roof mounting bearing bracket set
- Rollers: Nylon (pair included)
- Assist rating: up to 160 lb ramp load / 80 lb per hinged door
- Bar: Not included (must be supplied by buyer)
Note: Confirm wind direction, inspect cable length, and follow all safety instructions during installation. This kit comes without the spring bar — plan accordingly.
