Yoke Hoist Rings
A hoist ring is a threaded lifting point that threads directly into a tapped hole in a machine frame, mold, or fabricated component. The ring body swivels 360 degrees and pivots to follow the crane hook angle without bending the load path through the bolt. That geometry is what makes hoist rings the standard attachment on heavy machinery, die casting equipment, and precision fabrications where a welded lifting point isn't an option.
About Yoke Hoist Rings
Yoke manufactures hoist rings in forged alloy steel, ISO 9001 certified, covering WLL from 0.5 tons through 35 tons. Holloway Houston stocks the Yoke hoist ring line in standard thread sizes for the machinery and manufacturing industries.
A hoist ring provides a threaded, WLL-rated lifting attachment that threads into the machine itself, no welding, no weld pad, no structural modification. The ring body contains a swivel mechanism that allows 360-degree rotation and a pivot that tilts the ring bail to follow the angle of the lift without putting a moment load on the threaded shank.
Yoke hoist rings are forged from alloy steel and individually proof-tested per ISO 9001 process. The threaded shank screws into a standard tapped hole in the machine frame; a torque specification from the Yoke documentation governs installation torque for the rated WLL to be valid.
ASME B30.26 (Rigging Hardware) covers hoist rings as rigging hardware in load-handling service. The standard addresses design factors, marking requirements, and inspection criteria.
Types of Yoke Hoist Rings
Swivel Hoist Rings (Standard)
Standard swivel hoist rings are the most common configuration, a threaded shank below, a forged ring body in the middle, and a bail at the top for the crane hook or sling. The body swivels 360 degrees and pivots to follow the sling angle. Working load limits from 0.5 tons to 35 tons depending on thread size and shank diameter. Thread sizes typically from 1/4 inch through 1-1/4 inch UNC and metric equivalents.
Side-Pull Hoist Rings
Side-pull (or latch-style) hoist rings allow the bail to articulate to one side, accommodating horizontal and angled pulls that a standard in-line hoist ring can't follow. These appear on horizontal machinery pulls, die lifts, and applications where the crane approaches from the side rather than directly above.
Swivel Hoist Rings (Metric Thread)
Metric thread versions of the Yoke swivel hoist ring line serve imported machinery and equipment where the tapped holes are metric rather than UNC. Thread sizes match common metric machinery standards. WLL ratings are equivalent to the UNC counterparts at the same load-bearing cross-section.
Safety Swivel Hoist Rings
Some Yoke hoist ring models include a positive-retention feature at the bail that prevents the crane hook or sling from disengaging during load maneuvering. These are specified where the hoist ring bail is in an orientation where accidental hook disengagement is a concern during multi-point lifts.
Yoke Hoist Ring Sizes and Working Load Limits
WLL range:
- 0.5 tons to 35 tons.
Thread types:
- UNC (unified national coarse).
- Metric.
Standard thread sizes:
- 1/4" UNC through 1-1/4" UNC (and metric equivalents).
Material:
- Forged alloy steel.
Marking per ASME B30.26:
- WLL.
- Thread size.
- Manufacturer ID.
Installation:
- Per Yoke torque specification for rated WLL.
Why Yoke for Hoist Rings
Yoke hoist rings have been a named specification in machinery and die-cast industries for years. The combination of forged alloy body, 360-degree swivel, and pivot articulation in a range of thread sizes means one manufacturer covers most of what a shop or maintenance team needs.
The ISO 9001 certification and individual proof testing give procurement managers and safety personnel the documentation needed for lifting equipment records without a separate supplier request.
Holloway Houston offers rigging inspection services. Our inspectors examine hoist rings and below-the-hook hardware per ASME B30.26 and applicable standards.
Shop by Product Type
Yoke Hoist Ring Applications by Industry
- Heavy Manufacturing : Threaded lifting attachments on machine tools, press frames, and manufactured equipment for installation and maintenance lifting.
- Die Casting and Tooling : Hoist rings on mold frames and die sections for die changes and maintenance in high-cycle production environments.
- Aerospace and Defense : Below-the-hook lifting attachments on precision fabrications and assemblies where welded lifting points would compromise the base material.
- Oil and Gas Equipment : Lifting attachments on valves, manifolds, and equipment modules where the base material accepts a threaded hoist ring.
- Power Generation : Equipment installation and maintenance using hoist rings on turbine casings, valve bodies, and related heavy components.
Why Holloway Houston for Yoke Hoist Rings
Holloway Houston stocks Yoke hoist rings alongside the broader Yoke lifting hardware line. For machinery and manufacturing customers in the Houston area and beyond, same-day availability on in-stock thread sizes and WLL ratings means less downtime on die changes and equipment maintenance lifts.
Over 65 years in rigging means our team can help with thread size matching, WLL selection guidance, and documentation for lifting equipment records.
Related Below-the-Hook Hardware
- Yoke Lifting Points : Weld-on and bolt-in swivel lifting points for structural and fabricated applications where threading is not an option. Shop Yoke Lifting Points
- Yoke Shackles : Connect slings and hooks to hoist ring bails in multi-point lifting setups.
- Yoke Swivels : In-line swivels for rigging above hoist rings where load rotation is expected.
Hoist Ring Safety and Awareness
Hoist rings fall under ASME B30.26 (Rigging Hardware) for design, marking, and inspection in load-handling service. EN 1677-1 (Forged components for chain slings, general requirements) covers design and testing requirements for forged lifting components including hoist rings and is part of the certification basis for Yoke forged hardware. OSHA 1926.251 applies to rigging hardware used in construction jobsite applications.
Key awareness points:
- Installation torque for hoist rings is specified by the manufacturer. Under-torqued hoist rings may pull out of the tapped hole under load, the published WLL is valid only at the specified installation torque.
- The tapped hole depth and base material thread engagement are part of the hoist ring's load-bearing system. Yoke documentation specifies minimum thread engagement depths for each thread size and WLL rating.
- Pre-use inspection covers the threaded shank for cross-threading or damage, the ring body for cracks or deformation, and the swivel for free rotation and full pivot articulation.
- Hoist rings that have been shock-loaded, overloaded, or cross-threaded during installation warrant inspection before further use.
- WLL markings per ASME B30.26 are stamped on the ring body. Hoist rings with illegible markings are removed from service pending re-identification or replacement.
Frequently Asked Questions
A hoist ring is a threaded lifting attachment that screws into a tapped hole in a machine or fabricated component. The ring body swivels 360 degrees and pivots to follow the crane hook angle, keeping the load path through the center of the threaded shank without bending it. Yoke hoist rings are forged alloy steel, individually proof-tested, and marked with WLL per ASME B30.26.
A hoist ring attaches via a threaded shank into a tapped hole, no welding or external attachment hardware. A lifting point uses a weld pad welded to the structure or a bolt-in base bolted to existing holes. Hoist rings are the standard for machinery with existing threaded lift holes; lifting points are used on structural steel, pressure vessels, and fabricated modules where tapped holes are not present.
Yoke hoist rings at Holloway Houston cover WLL from 0.5 tons through 35 tons across thread sizes from 1/4 inch UNC through 1-1/4 inch UNC and metric equivalents. The WLL at each thread size is published in the Yoke product data and assumes the specified installation torque and minimum thread engagement depth.
The swivel and pivot mechanism on Yoke hoist rings allows the bail to follow the crane hook angle and rotate as the load swings. The rated WLL applies within the articulation range of the specific hoist ring model. Side-pull hoist ring models are available for horizontal and angled pull applications beyond the articulation range of standard swivel models.
Torque specifications are published in the Yoke product documentation for each thread size and WLL rating. The rated WLL is valid only at the specified torque applied to a thread engagement depth that meets Yoke's minimum requirement. Holloway Houston provides Yoke product data sheets with every hoist ring order.
ASME B30.26 (Rigging Hardware) covers hoist ring inspection in load-handling service. EN 1677-1 (Forged components for chain slings, general requirements) is part of the certification basis for Yoke forged hardware. OSHA 1926.251 applies to rigging equipment in construction. Inspection covers the shank, ring body, and swivel mechanism at intervals appropriate to the severity of service.
DISCLAIMER
Hoist rings are load-bearing components. Selection and installation call for matching the thread size and load capacity to the base material and the lift requirements, consistent with manufacturer documentation, ASME B30.26, and applicable OSHA standards. This page provides general product awareness and does not replace engineering judgment or site-specific lift planning.