Tie Down PX5 Sentinel Penetrating Mobile Fall Protection Cart, 7 Workers, Concrete Capable
The PX5 Sentinel takes the seven worker PX5 platform and adds mass, storage and concrete capability. At 1,069 lb with a locking, weather stripped material box, front and rear brakes and vertical lifting rings, it is the cart for crews who work the same roof for weeks and need their gear on the deck with them.
On TPO, EPDM, ISO, metal deck and plywood it protects up to five workers in fall arrest and two in restraint with the five steel penetrator spikes. With the spike device removed per the manual it also works on smooth concrete and compacted soil or clay for two fall arrest and two restraint workers, something no other Tie Down cart does. The PX5 Rescue Winch (72831) fits the Sentinel for membrane work.
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 Sentinel 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.
1,069 lb penetrating cart with concrete setup, up to 7 workers, locking material box.
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 Sentinel is for contractors and facility teams who need one mobile anchorage that covers both the membrane roof and the concrete deck or slab, and who want tools and PPE locked on the roof overnight. Precast and tilt up crews, parking structure maintenance, and roofers working mixed surfaces choose it over the lighter PX5 Original. Each worker still needs a harness, a connecting device sized to the range of use, and a rescue plan.
Features
Concrete and compacted soil
Remove the penetrator spike device per the manual and the Sentinel anchors two fall arrest and two restraint workers on smooth concrete or compacted soil and clay at an 8 ft setback (9 ft on soil and clay).
Locking material box
A weather stripped, locking box keeps harnesses, SRLs, tools and the rescue winch dry and secure on the roof. A fire extinguisher holder is built in.
Front and rear brakes
Brakes at both ends hold the 1,069 lb cart on slopes up to 1:12 while the crew ties off.
Seven workers on membranes
Five red fall arrest points low on the cart (three on TPO and ISO, five on plywood and 18 to 22 gauge deck) plus two restraint shackles on top.
Vertical lifting rings
Lifting rings on the frame give the crane a straight pick for the heavier cart.
Same tested platform
Same drop tested PX5 chassis, 500 lb flat-free tires and 45 degree angled outer tie-offs as the PX5 Original.
Concrete setup removes the spike device. Once set up for concrete the Sentinel cannot be used on any other surface until the penetrator device is reinstalled, and the rescue winch cannot be used in a concrete application. Setback is 6 ft on membranes, 8 ft on concrete, 9 ft on compacted soil or clay. 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 by surface, up to five consecutive drops.
Declaration of Conformity
Tie Down DoC ETR 72836/72838/72833/72839 covers the PX5 family including the Sentinel concrete and soil testing. See the manual.
Typical Applications
How to Use
Follow the Tie Down instruction manual. The sequence below is an overview only.
- Choose the setup. Membrane, metal deck and plywood use the penetrator spikes; smooth concrete and compacted soil use the concrete setup with the spike device removed.
- Verify the load. Confirm the deck or slab carries the 1,069 lb cart plus the crew before hoisting.
- Hoist and position. Lift by the vertical rings, roll to the setback for the surface (6 ft membranes, 8 ft concrete, 9 ft soil or clay), square to the edge, and set both brakes.
- Connect by surface. Membranes and decks: up to five fall arrest and two restraint. Concrete and soil: two fall arrest on the concrete connection and two restraint.
- Reposition. Keep restraint lengths 5 ft shorter than the distance to the edge while rolling, then reset the brakes.
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 concrete connection mechanism: bending, cracks, corrosion or binding.
- Tie-off shackles and lifting rings: distortion, cracks, worn pins or missing retainers.
- Frame, material box and welds: cracks, bends, corrosion, a lid that will not lock.
- Tires, both brakes and handles: damaged tires, brakes 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
Tie Down walks through the Sentinel features and setup.
Five simultaneous fall arrest drops on the Sentinel.
Setting the Sentinel up for a concrete surface.
How the 72831 rescue winch mounts to the Sentinel.
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 | 72833 (Tie Down Engineering, USA) |
|---|---|
| Type | Penetrating mobile fall protection cart with concrete setup |
| Unit weight | 1,069 lb |
| Capacity on membranes | 7 workers: up to 5 fall arrest (TPO and ISO 3; plywood and 18 to 22 gauge deck 5), 2 restraint, 310 lb each |
| Capacity on concrete and soil | 2 fall arrest, 2 fall restraint, spike device removed |
| Approved surfaces | TPO, ISO, EPS, EPDM, ballasted EPDM, 18 to 22 gauge metal deck, plywood, smooth concrete, compacted soil and clay |
| Not approved | Tectum, gypsum, loose laid membranes, ice, snow |
| Maximum slope | 1:12 |
| Minimum setback | 6 ft membranes, 8 ft concrete, 9 ft compacted soil or clay |
| Tires and brakes | 4 flat-free 500 lb tires, front and rear brakes, 180 degree turning |
| Storage | Locking, weather stripped material box with fire extinguisher holder |
| Footprint | 48 x 90 in |
| Shipping | Job site ready, LTL freight |
| Rescue option | PX5 Rescue Winch 72831 (not for concrete applications) |
| 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 72833 Submittals and Documentation
PX5 Sentinel 72833 Sell Sheet (PDF)Features, capacity by surface, concrete rating and footprint. PX5 Sentinel 72833 Instruction Manual (PDF)Membrane and concrete setup, spike removal, range of use, DoC 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.
Working Concrete and Membrane on the Same Job?
The Sentinel covers both. Tell us the surfaces and crew size and we will confirm the setup, quote delivered freight and arrange financing.
Call 863-703-4522 to talk to a fall protection specialist.
