Bolt Hole Casters - Hollow Kingpin Casters - Stemless Casters - 57HK Series
The Hollow Kingpin Caster( also called a "Bolt Hole Caster" or "Stemless Caster" ) is a very unique design for attaching a caster to an object. It allows you to customize your application by using a bolt or a lag bolt in the length or thread of your choice. Our Hollow Kingpin option has 2 sizes, 3/8" diameter and 1/2" diameter. When choosing your bolt, it should be as close to those dimensions as possible. Do not attach the caster with a 1/4" bolt just because it fits into the 3/8" hole. Hollow Kingpin casters give you great flexibility when attaching into end grain of wood because you can use a lag bolt. You can also use Metric Threads but we only recommend using a 12mm bolt in the 1/2" hollow kingpin hole. The length of the bolts that you use is up to you. Short or Long, makes no difference; whatever works for your application. To attach to your object using the Hollow Kingpin option, simply remove the wheel from your caster ( axle is a nut and bolt ). This gives you full access to the hole in the swivel bearing for you to attach the caster bracket. Once attached, just assemble the wheel and tighten the axle. Very simple. Any questions, call us.

The Total Locking Caster is ideal for applications that must be totally immobile when the caster brake is engaged. Its design ensures that the swivel of the caster and the wheel are locked at the same time. This is a very popular caster for both consumer and business applications. They are available with 3", 4" & 5" diameter wheels. We offer the Total locking caster along with matching non-locking swivel casters.
  • Built-in total-lock one-step brake system locks down both the swivel and the wheel simultaneously or Top Lock Brake to just lock the wheel. Your Choice!
  • Case hardened double ball raceways provide extra capacity & durability.
  • Thermal plastic rubber and polyurethane on polyolefin wheels do not mark floors. They come with a single precision ball bearing with integrated spanner bushing & thread guard or your choice of either ball bearings or the economical plain bore.
  • Both Polyurethane on Aluminum and Rubber on Aluminum wheels do not mark floors. They have Annular Ball bearings.
  • All of our ball bearing wheels roll exceptionally well.
There are 2 options for the size of the "Hole". Standard is for a 1/2" or 12mm bolt with an option of a "Reducer" for a 3/8" Bolt. We can also make this fit a 10mm bolt upon request.
Hollow Kingpin Total Locking Caster
Total Locking
Caster
Hollow Kingpin Caster
Swivel Caster
Hollow Kingpin Caster with Brake
Swivel Caster
Optional Brake
CLICK ON WHEEL SIZE    for Detailed Specfications, Options & to ORDER..
All Photos on this page are with 5" Wheels.
1 1/4" Wide Thermo Plastic Rubber ( TPR ) Wheels

• Hardness: 55 - 65 Shore A
• Temperature rating: -40 to 180 degrees Fahrenheit, intermittent service. (120 degrees continuous service).
• Mechanically bonded thermo plastic rubber on polyolefin core.
• Single precision bearing pressed into core provides smooth rolling.
• Offers floor protection, is non marking and delivers somewhat of a cushioned and quieter ride than a standard hard tread wheel.
• Resistant to most chemicals, oils, acids,grease and water.
• Plastic thread guards included.
• Wheel Color: Dark Gray on a Beige center.

Model 57 Hollow Kingpin Caster
3 inch wheel
Total Locking
Part No.

57HKTRP3X-TL
Capacity
200 lbs
Model 57 Hollow Kingpin Caster
3 inch wheel
Swivel Only
Part No.

57HKTRP3X
Capacity
200 lbs
Model 57 Hollow Kingpin Caster
4 inch wheel
Total Locking
Part No.

57HKTRP4X-TL
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
4 inch wheel
Swivel Only
Part No.

57HKTRP4X
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
5 inch wheel
Total Locking
Part No.

57HKTRP5X-TL
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
5 inch wheel
Swivel Only
Part No.

57HKTRP5X
Capacity
250 lbs

1 1/4" Wide Thermo Plastic Rubber ( TPR ) Wheels

• Hardness: 55 - 65 Shore A
• Temperature rating: -40 to 180 degrees Fahrenheit, intermittent service. (120 degrees continuous service).
• Precision molded high quality Thermal Plastic Rubber mechanically locked to a durable polyolefin core.
• Provides a smooth, cushioned ride.
• Offers floor protection, is non marking and non-conductive.
• Resistant to most chemicals, oils, grease, cleaning agents, solvents and water.
• Ball bearings provide greater roll-ability and less effort to push a load.
• Wheel Color: Gray on a Beige center.

Model 57 Hollow Kingpin Caster
3 inch wheel
Total Locking
Part No.

57HKTR3X-TL
Capacity
200 lbs
Model 57 Hollow Kingpin Caster
3 inch wheel
Swivel Only
Part No.

57HKTR3X
Capacity
200 lbs
Model 57 Hollow Kingpin Caster
4 inch wheel
Total Locking
Part No.

57HKTR4X-TL
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
4 inch wheel
Swivel Only
Part No.

57HKTR4X
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
5 inch wheel
Total Locking
Part No.

57HKTR5X-TL
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
5 inch wheel
Swivel Only
Part No.

57HKTR5X
Capacity
250 lbs

1 1/4" Wide Polyurethane on Polyolefin Wheels

• Hardness: 95 Shore A
• Temperature rating: -40 to 180 degrees Fahrenheit.
• Mechanically bonded polyurethane on polyolefin core.
• Resistant to most chemicals, oils, acids,grease and water.
• Offers floor protection, is non marking and delivers somewhat of a cushioned and quieter ride than
a standard hard tread wheel.
• Single precision bearing pressed into core provides smooth rolling.
• Plastic thread guards included.
• Wheel Colors: Gray on Beige
Model 57 Hollow Kingpin Caster
3 inch wheel
Total Locking
Part No.

57HKGPP3X-TL
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
3 inch wheel
Swivel Only
Part No.

57HKGPP3X
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
4 inch wheel
Total Locking
Part No.

57HKGPP4X-TL
Capacity
275 lbs
Model 57 Hollow Kingpin Caster
4 inch wheel
Swivel Only
Part No.

57HKGPP4X
Capacity
275 lbs
Model 57 Hollow Kingpin Caster
5 inch wheel
Total Locking
Part No.

57HKGPP5X-TL
Capacity
300 lbs
Model 57 Hollow Kingpin Caster
5 inch wheel
Swivel Only
Part No.

57HKGPP5X
Capacity
300 lbs

1 1/4" Wide Polyurethane on Polyolefin Wheels

• Hardness: 95 Shore A
• Temperature rating: -40 to 180 degrees Fahrenheit.
• Precision molded high quality polyurethane mechanically locked to a durable polyolefin core, provides
a very versatile, strong and attractive wheel.
• Resistant to most chemicals, oils, grease, cleaning agents, solvents and water.
• Offers floor protection, is non marking and non-conductive.
• Ball bearing option provides greater roll-ability and less effort to push a load.
• Wheel Colors: Gray on Beige; Red on Gray; Blue on Gray; Black on Beige.
• Wheel Colors ARE AVAILABLE IN ALL SIZES.
Model 57 Hollow Kingpin Caster
3 inch wheel
Total Locking
Part No.

57HKXP3X-TL
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
3 inch wheel
Swivel Only
Part No.

57HKXP3X
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
4 inch wheel
Total Locking
Part No.

57HKXP4X-TL
Capacity
275 lbs
Model 57 Hollow Kingpin Caster
4 inch wheel
Swivel Only
Part No.

57HKXP4X
Capacity
275 lbs
Model 57 Hollow Kingpin Caster
5 inch wheel
Total Locking
Part No.

57HKXP5X-TL
Capacity
300 lbs
Model 57 Hollow Kingpin Caster
5 inch wheel
Swivel Only
Part No.

57HKXP5X
Capacity
300 lbs

1 1/4" Wide Polyurethane on Aluminum Wheels

• Hardness: 95 Shore A
• Temperature rating: -40 to 180 degrees Fahrenheit.
• Precision molded high quality polyurethane chemically bonded to a smooth, polished aluminum core,
provides a very versatile, strong and attractive wheel.
• The combination of a slight crowned tread and high quality annular ball bearings provide exceptionally
low effort to start up and push a load. Great for ergonomic applications.
• Great wheel for foodservice and institutional applications, meets NSF & UL sanitation standards.
• Offers floor protection, is non marking and non-conductive.
• Resistant to most chemicals, oils, grease, cleaning agents, solvents and water.
• Wheel Color: Blue on Aluminum with Blue bearing caps.
Model 57 Hollow Kingpin Caster
3 inch wheel
Total Locking
Part No.

57HKPA3X-TL
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
3 inch wheel
Swivel Only
Part No.

57HKPA3X
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
4 inch wheel
Total Locking
Part No.

57HKPA4X-TL
Capacity
275 lbs
Model 57 Hollow Kingpin Caster
4 inch wheel
Swivel Only
Part No.

57HKPA4X
Capacity
275 lbs
Model 57 Hollow Kingpin Caster
5 inch wheel
Total Locking
Part No.

57HKPA5X-TL
Capacity
300 lbs
Model 57 Hollow Kingpin Caster
5 inch wheel
Swivel Only
Part No.

57HKPA5X
Capacity
300 lbs

1 1/4" Wide Rubber on Aluminum Wheels

• Hardness: 65 to 75 Shore A
• Temperature rating: -40 to 180 degrees Fahrenheit, intermittent service. (120 degree continuous service).
• Precision molded high quality gray rubber chemically bonded to a smooth, polished aluminum core,
provides a very versatile, strong and attractive wheel.
• The combination of an upgraded annular bearing (on 1-1/4 tread wheels) and soft rubber tread provides
an exceptionally smooth, cushioned ride, with minimal effort required to start up and push a load.
Having a cushioned ride provides the advantage of being able to roll over
small debris and small obstacles on the floor like electrical cords, door thresholds, tiled floors, etc.
• Great wheel for foodservice and institutional applications, meets NSF & UL sanitation standards.
• Offers floor protection, is non marking and non-conductive.
• Resistant to most chemicals, oils, grease, cleaning agents, solvents and water.
• Wheel Color: Gray on Aluminum.
Model 57 Hollow Kingpin Caster
3 inch wheel
Total Locking
Part No.

57HKRA3X-TL
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
3 inch wheel
Swivel Only
Part No.

57HKRA3X
Capacity
250 lbs
Model 57 Hollow Kingpin Caster
4 inch wheel
Total Locking
Part No.

57HKRA4X-TL
Capacity
275 lbs
Model 57 Hollow Kingpin Caster
4 inch wheel
Swivel Only
Part No.

57HKRA4X
Capacity
275 lbs
Model 57 Hollow Kingpin Caster
5 inch wheel
Total Locking
Part No.

57HKRA5X-TL
Capacity
300 lbs
Model 57 Hollow Kingpin Caster
5 inch wheel
Swivel Only
Part No.

57HKRA5X
Capacity
300 lbs
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