Overview
Engineered for demanding industries requiring high capacity mobility, the 91HD Caster solves common caster challenges with a purpose-built design that prioritizes strength, safety, and long-term durability.
- Enhanced Capacity & Ergonomic Swivel
The 91HD handles up to 25,000 lbs. per caster, with a unique swivel section that places the ball bearing in a shear load configuration that offers greater strength and reduces push force when swiveling under load. This reduces operator fatigue and supports safe, ergonomic material handling.
- Reinforced for Extreme Loads
The raceway and yoke are heat treated to a higher Rockwell standard, offering superior resistance to wear, impact, and deformation. Reinforced legs and platform construction ensure safety and stability under extreme loads.
- Maintenance-Optimized Design
Reduce downtime with easy maintenance features: a Zerk fitting lubrication point makes greasing simple, while the Shielded Swivel Bearing protects against contaminants that lead to failure keeping your operations moving with less maintenance and fewer breakdowns.
Application
The 91HD Caster is ideal for environments where reliability under stress is required. From massive tooling carts to mobile structures, this caster is trusted for heavy duty performance.
Heavy Manufacturing Equipment
- Support carts for massive tooling, weldments, or press components
- Handling solutions in debris or impact-prone areas
Aerospace & Defense
- Transport of large-scale components such as fuselage frames, sensitive satellite assemblies, or armored systems
- Heavy mobile fixtures in maintenance and testing applications
Automotive Assembly
- Movement of EV battery modules, chassis carts, or engine carriers
- Assembly carts requiring maximum strength and controlled movement
Marine & Modular Construction
- Casters for mobile support platforms, boat frames, or modular building components
- Ensures safe movement of heavy structures across uneven or confined surfaces
Options
Caster Concepts has a wide variety of caster options. Many of these not only improve function – but also provide safety and add longevity to the product. When considering safety options, the most common consideration would be caster locks, caster brakes, toe guards, and reinforced legs. Options that extend the life of a caster are primarily options that seal the bearing of the caster to prevent contamination of the precision parts.
Other options include threaded zerks for when an application is difficult and high level of maintenance is required and track brush wipers that keep debris from stopping movement or damaging a wheel. These options can be added at the time of manufacturing or after the caster is fully assembled.
Brakes
Wrap Around Brake
The wrap around brake provides total access to the braking system regardless of the caster orientation.
Single Side Brake
The single-side brake is an economical brake for medium heavy-duty casters with 6- to 12-inch diameter wheels.
Pneumatic Poly Cam Brake
Similar to the standard poly cam brake in operation, the pneumatic poly cam brake offers a greater movement of the brake shoe to compensate for pneumatic tires. The brake is foot-operated.
Face Contact Brake
The face contact brake is activated by tightening the brake shoe against the wheel.
Dual Side Brake
The dual side brake is a cost-effective hub brake. Each brake lever must be engaged by the operator.
Cam Brake
The cam brake is used on lighter-duty casters. This brake provides an efficient, cost-effective hub braking system.
Poly Lock
A polyurethane lock roller engages a steel brake shoe against the tread of the wheel providing positive engagement of the tread. Levers can be mounted “toe out” (shown) or reversed to “toe in.”
Locks
Passive Swivel Lock
The passive swivel lock is used when full mobility of a unit is needed. The swivel lock plunger engages a detent and locks the caster for straight-line movement. When side thrust is applied, the swivel unlocks providing maximum maneuverability of the unit. This swivel lock is NOT RECOMMENDED for towed applications.
Factory Installed Swivel Lock
The swivel lock provides notches every ninety degrees for use in straight line movement of the cart. Also available in 1, 3 or 8 position.
Heavy Duty Locking Swivel Casters
Heavy-duty locking casters can be manufactured with built-in locking mechanisms. Our heaviest duty swivel lock is specifically designed for casters with a carrying capacity of 10,000 lbs. and up and can handle tremendous lateral loads without compromise.
Demountable Swivel Lock
The demountable swivel lock is a field-installed option available up to the 71 Series.
Vertical Mounted Swivel Lock
The vertical mounted swivel lock is mounted out of the way, under the yoke base of the caster. Used mostly in heavy-duty applications, this swivel lock provides a more secure locking feature.
Heavy Duty Demountable Swivel Lock
The heavy-duty demountable swivel lock is a field-installed option available for the 80s and 90s series of casters.
Foot Actuated Swivel Lock
The locking mechanism on the foot-operated swivel lock is the same as the standard swivel lock. To engage or disengage the lock, there is a pedal that can be operated by foot to improve ergonomics and speed of locking/unlocking a swivel caster.
More
Threaded Zerks
Threaded Zerks Grease fittings for every size caster.
Caster Toe Guards
Role of Caster Toe Guards in Workplace SafetyA caster toe guard is a bracket that provides a barrier between the caster wheel and a cart operator's foot. Often used as a safety device, the toe guard is mounted approximately one-half of an inch off the floor. This height can be modified based on the terrain the caster must travel over. It can be used in both manual and power applications.
Track Brush Wiper
Add a track wiper brush for extra protection against debris and build-up. Track wiper brushes are utilized when any type of wheel is running on a track where debris can stop the movement, damage the wheel or take it off the track.
Sealed Wheels
Rubber inserts provide maximum protection against debris within sealed wheels.
Caster Steering Tubes
Slots for steering handles allow precision motion control for casters with steering tubes. Steering tubes are used on industrial casters that carry heavy loads and need to be manipulated in very tight places.
Angle Reinforced Legs
Heavy-duty angle reinforced legs provide maximum strength and rigidity. Reinforced Legs either angle iron on the outside of the leg or gussets on the inside serve to strengthen the caster when exposed to side loading.
Heat Treated Raceways
Heat-treated raceways in swivel casters are designed to prevent brinelling of the raceways.
