ROB01 Bull Ring Reusable Roof Anchor – 2-Pack
This 2-pack puts two Frontline ROB01 bull ring anchors in your kit – each a compact, rugged tie-off point for wood-framed roofs. A welded steel bar carries a 5,000 lb rated O-ring on a 3/8 in thick ASTM A36 steel base - fasten it to the structure, connect, and work. When the job wraps, remove it and take it to the next roof.
Zinc plated for corrosion protection and weighing just 2.5 lbs each, the two bull rings install in minutes on most flat roof wooden structures. It carries a 5,000 lb minimum breaking strength with a 310 lb max user capacity, and was third-party tested by Intertek to ANSI/ASSP Z359.18-2017 as a Type T anchorage connector on wood substrate.
Product Video
See the Frontline ROB01 reusable bull-ring roof anchor and how it installs as a tie-off point.
Who Needs This Product
This product is a reusable single-point anchorage connector for personal fall arrest or restraint systems on wood-framed roofs. Roofers, solar installers, and remodelers fasten the bull ring to structural wood, tie off to the O-ring, and remove the anchor when the work is complete. Each worker still needs a full body harness and a compatible connecting device attached to the ring.
Features
Welded bull ring
A 5,000 lb rated O-ring welded to a steel bar gives a generous, easy-to-clip connection point.
3/8 in steel base
ASTM A36 rated plate spreads the load across the fasteners and the structure.
Reusable by design
Unfasten, inspect, and redeploy the same anchor roof after roof.
Minutes to install
Small, compact footprint that one worker sets up with common tools.
Zinc plated
Plating fights corrosion through repeated outdoor deployments.
Independently tested
Intertek Z359.18-2017 Type T test report included in Submittals.
Technical Specifications
| SKU | ROB01-2PK (2 anchors per pack) |
|---|---|
| Type | Reusable single-point roof anchor (anchorage connector, Type T) |
| Top | Welded steel bar with 5,000 lb rated O-ring |
| Base | ASTM A36 rated steel, 3/8 in (9 mm) thick |
| Finish | Zinc plated / galvanized |
| Weight | 2.5 lbs |
| Min breaking strength | 5,000 lbs |
| Max user capacity | 310 lbs / 140 kg (one worker) |
| Substrate | Flat roof wooden structures (per manual fastening schedule) |
| Standards | ANSI Z359.18-2017 Type T (Intertek tested); ANSI A10.32; OSHA 1926; OSHA 1910 |
Fasten it the way the manual says. The bull ring is only as strong as its connection to sound structural wood - fastener type, count, and placement per the Frontline manual are mandatory, and the structure must be verified by a qualified person before anyone ties off. One worker per anchor at 310 lbs maximum.
Compliance Standards
ANSI Z359.18-2017 Type T
American National Standard for anchorage connectors. Intertek tested the ROB01 on wood substrate: design, static strength, dynamic strength, and residual strength all PASS - see the test report in Submittals.
ANSI A10.32
Fall protection requirements for construction and demolition operations.
OSHA 29 CFR 1926.502
Federal construction fall protection criteria, including anchorage strength requirements.
OSHA 29 CFR 1910.140
General industry personal fall protection system requirements.
Typical Applications
How to Install the ROB01 Bull Ring
Follow the manufacturer's manual. The sequence below is an overview only.
- Verify the structure. Have a qualified person confirm the wood framing can support anchorage loads.
- Inspect the anchor. Check the ring, weld, base plate, and finish before each installation.
- Position the base. Place the anchor over structural wood per the manual layout requirements.
- Fasten. Install the fastener type and count the Frontline manual specifies - no substitutions.
- Connect. Attach your connecting device to the O-ring and perform a pull test.
- Verify clearance. Confirm fall clearance below the work surface before work begins.
Inspection and Retirement
Inspect before each use, with a documented competent-person inspection at least every 6 months. Pull the equipment from service for any of the conditions below.
- O-ring and weld: deformation, cracks, nicks, or corrosion.
- Base plate: bending, cracks, elongated fastener holes, or coating loss.
- Fasteners: correct type and count, fully seated, no withdrawal.
- Structure: splitting, rot, or crushing of the wood around the anchor.
- Markings: labels must be present and legible.
Retire the anchor immediately after any fall arrest event or if any inspection point fails. Destroy retired equipment so it cannot return to service.
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 SRL or lanyard setup. 3Generate a PlanGet a printable OSHA-compliant Fall Protection Plan structured around 29 CFR 1926.502(k).
Frequently Asked Questions
Frontline ROB01 Submittals and Documentation
Frontline ROB01 Spec Sheet (PDF)Materials, base thickness, strength ratings, and standards for the bull ring anchor. Frontline ROB01 User Manual (PDF)Installation, fastening schedule, inspection requirements, and inspection log. Frontline ROB01 Test Report (PDF)Intertek third-party test results to ANSI/ASSP Z359.18-2017 Type T on wood substrate. Frontline Catalog (PDF)The full Frontline Fall Protection product catalog with the complete anchor, lanyard, and SRL range.Compatible and Related Products
- Frontline ROCH01 Halo Chain Anchor. A heavy duty reusable chain anchor for wooden substrates.
- Frontline ROWT18 Roof Wood Truss Anchor. A lightweight truss anchor for permanent or temporary installs.
- Frontline RK050V50 Combat Plus Roofers Kit. A complete harness, lifeline, and anchor kit for roofing crews.
Outfitting a Roofing Crew?
Need help matching anchors, lifelines, and harnesses for your roof work? Confirm your application, anchorage, and clearance with us and we will walk through the kit list so the right equipment ships together.
Call 863-703-4522 to talk to a fall protection specialist.
