Tie Down PX5 Original Penetrating Mobile Fall Protection Cart for 7 Workers
The PX5 Original is the big crew version of the Penetrator cart. At 517 lb it still hoists onto the roof in one lift, but it carries five fall arrest tie-offs and two restraint points so a full roofing crew works from a single anchorage. Five steel penetrator spikes engage the deck only when a fall loads the cart.
It rolls on four 500 lb flat-free tires (2,000 lb total) with a front brake and a 180 degree turning radius, and the first and fifth tie-offs are angled at 45 degrees to widen the work zone. Approved surfaces include TPO, EPDM, ISO, EPS, 18 to 22 gauge metal deck and plywood, with the number of fall arrest workers set by the surface. The PX5 Rescue Winch (72831) adds 100 ft of galvanized lifeline.
The finance payment shown is a sample, not an offer. Financing is provided through APPROVE and its lender network, subject to credit approval, at a 60 month term; your offered rate and term may differ. Financing is available on single items priced at 1,500 dollars and up, including smaller items bundled with the unit.
Build Your PX5 Original Package
Start with the cart, check the accessories your crew needs, and add the whole package to your cart in one click. The finance sample above updates as you build.
517 lb penetrating cart, up to 7 workers, 500 lb tires with front brake.
Manual winch with 100 ft galvanized lifeline, folding handle, swivel snap hook with impact indicator and carry bag. Mounts to the PX5 Original and Sentinel for assisted rescue on membrane roofs (not for the concrete setup).
Everything in the package ships together on one pallet by LTL freight. The fixed freight shown under Shipping above covers the whole package to a commercial address in the continental US and is added at checkout. Alaska, Hawaii and Canadian orders have additional shipping fees based on carrier cost at the time of order.
Who Needs This Product
The PX5 Original is for roofing, waterproofing and mechanical contractors who put five or more workers on a low slope roof at the same time and need one anchorage that moves with them. It replaces several smaller carts or a field of temporary anchors. Pair it with full body harnesses, connecting devices sized to the range of use, and a rescue plan; the PX5 Rescue Winch covers the rescue side.
Features
Seven workers, one cart
Five fall arrest connection points low on the cart and two fall restraint shackles on top. Check the surface table in the manual: TPO and ISO allow three in fall arrest, plywood and 18 to 22 gauge deck allow five.
Angled outer tie-offs
The first and fifth fall arrest points are set at 45 degrees so the outer workers get a wider safe work zone without moving the cart.
Heavy duty running gear
Four 500 lb flat-free tires, 2,000 lb total, with a front brake that holds the cart during tie-off and a 180 degree turning radius for tight rooftops.
Five steel penetrator spikes
The spikes drive into the deck under fall load and stop the cart. In normal use the membrane is untouched.
Six foot setback
On approved membranes the front guard plate sits 6 ft from the edge, 8 ft on concrete or clay, so more of the roof is workable.
Drop tested five times over
Tie Down's roof carts passed 310 lb, 6 ft free fall drop tests up to five consecutive drops, documented in the DoC inside the manual.
Workers in fall arrest depend on the surface. The PX5 allows five fall arrest workers on plywood and 18 to 22 gauge metal deck, but only three on TPO and ISO. Position the cart at least 6 ft from the leading edge (8 ft on concrete or clay), slope 1:12 or less, on an approved surface only. Confirm fall clearance with the calculator below.
Compliance Standards
OSHA 29 CFR 1926.502
Construction fall protection systems criteria for anchorages and personal fall arrest systems.
OSHA 29 CFR 1910.140
General industry personal fall protection systems.
ANSI Z359.6-2016
Design of active fall protection systems; 310 lb, 6 ft free fall drop tests, up to five consecutive drops.
Declaration of Conformity
Tie Down DoC ETR 72836/72838/72833/72839 covers the PX5 family drop testing by surface. See the manual.
Typical Applications
How to Use
Follow the Tie Down instruction manual. The sequence below is an overview only.
- Verify the surface and load. Confirm the roof type is approved, slope is 1:12 or less, and the deck carries the 517 lb cart plus crew.
- Hoist and position. Lift by the hoist rings, roll the front guard plate to at least 6 ft from the edge (8 ft on concrete or clay), square to the edge, and set the front brake.
- Set the spikes. Confirm the penetrator spikes are armed per the manual on a clean, dry area of deck.
- Connect by surface. Tie off up to five fall arrest workers on plywood or metal deck, three on TPO or ISO, plus two restraint workers on the top shackles.
- Reposition. Keep restraint lengths 5 ft shorter than the distance to the edge while rolling, then re-pin the handles and reset the brake.
Inspection and Retirement
Inspect before each use, with a documented competent person inspection at least annually. Remove the system from service for any of the conditions below.
- Penetrator spikes and mechanism: bending, cracks, corrosion or binding.
- Tie-off shackles and hoist rings: distortion, cracks, worn pins or missing retainers.
- Frame and welds: cracks, bends or corrosion from a fall or rough handling.
- Tires, brake and handles: damaged tires, a brake that will not hold, handles that will not pin.
- Labels and instruction plate: illegible or missing markings.
Remove the system from service immediately after any fall arrest event and have it inspected by a competent person before it returns to use.
Product Videos
The PX5 in action on a commercial roof.
How the 72831 rescue winch mounts to the PX5.
Working a parapet wall from the PX5.
PX3, PX5, Sentinel, BigFoot and Squatch side by side.
Fall ProtectionDistributors, LLC Free Tool · No Signup · OSHA 1926.502 Free Interactive Tool Fall Protection Calculator Pick your system. Run the math. Generate a plan. 1Pick Your SystemDetermine fall restraint vs. fall arrest based on your work surface, edge access, and clearance. 2Run the MathCalculate exact fall clearance required below the work surface for your lanyard or SRL setup. 3Generate a PlanGet a printable OSHA-compliant Fall Protection Plan structured around 29 CFR 1926.502(k).
Technical Specifications
| Part number | 72838 (Tie Down Engineering, USA) |
|---|---|
| Type | Penetrating mobile fall protection cart |
| Unit weight | 517 lb |
| Capacity | 7 workers total: up to 5 fall arrest (by surface), 2 fall restraint, 310 lb each |
| Fall arrest by surface | Plywood and 18 to 22 gauge deck: 5; TPO and ISO: 3 |
| Anchoring method | 5 steel penetrator spikes engage the deck under fall load |
| Approved surfaces | TPO, ISO, EPS, EPDM, ballasted EPDM, 18 to 22 gauge metal deck, plywood |
| Not approved | Concrete, tectum, gypsum, loose laid membranes, ice, snow (see the PX5 Sentinel for concrete) |
| Maximum slope | 1:12 |
| Minimum setback | 6 ft from the leading edge, 8 ft on concrete or clay |
| Tires | 4 flat-free 500 lb tires, 2,000 lb total, front brake, 180 degree turning |
| Footprint | 48 x 90 in |
| Shipping | Job site ready, LTL freight |
| Rescue option | PX5 Rescue Winch 72831 with 100 ft galvanized lifeline |
| Standards | OSHA 1926.502, OSHA 1910.140, ANSI Z359.6-2016 drop tested |
| Warranty | Tie Down 90 day limited warranty |
Frequently Asked Questions
Tie Down 72838 Submittals and Documentation
PX5 Original 72838 Sell Sheet (PDF)Features, capacity by surface, tire rating and footprint. PX5 72838 Instruction Manual (PDF)Setup, placement, range of use, connection points, DoC, warranty and safety checklist. Tie Down Mobile Fall Protection Line Sheet (PDF)The full cart lineup compared side by side. Tie Down Safety Catalog, Part 1 (PDF)Mobile fall protection, anchors and harness pages of the Tie Down safety catalog. Tie Down Safety Catalog, Part 2 (PDF)Guardrail, warning line and roofing safety pages of the Tie Down safety catalog.Compare the Tie Down Mobile Fall Protection Line
Every Tie Down cart is drop tested and ships job site ready. Pick by surface, crew size, and whether you need concrete capability, a rescue winch, or a lifeline between two carts.
- Tie Down Engineering. Mobile fall protection carts, rescue winches, ladder hoists and roofing equipment.
- Mobile fall protection systems. Every mobile anchor cart and grabber we carry.
Need Seven Workers on One Anchor?
Tell us the roof surface and crew size and we will confirm the fall arrest count, quote delivered freight, and set up financing. We stock the full Tie Down cart line.
Call 863-703-4522 to talk to a fall protection specialist.
