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200,000+ Orders Fulfilled for OEM & MRO Teams Nationwide
100+ Years of Combined Caster Industry Experience
Automatic Bulk Pricing | OEM & MRO Volume Discounts Applied at Checkout
Up to 350 lbs · Light Duty Applications
Up to 7,200 lbs · Industrial Duty
Up to 17,500 lbs · Heavy Industrial
Up to 40,000 lbs · Extreme Load Applications
Up to 40,000 lbs · Increased Maneuverability
Up to 3,100 lbs · Industrial Shock Absorbing
Up to 3,200 lbs - Corrosion Resistant
Stainless Steel
Up to 8,400 lbs.
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Plate dimensions shown are overall mounting plate size.
When replacing existing casters, select the closest plate size and verify bolt-hole compatibility.
BHP = Bolt Hole Pattern, shown under each plate.
Most in-stock items ship same or next business day. Shipping rates shown at checkout.
PRODUCT CODE: 2.04267.95-MTG51
The 4" x 1.25" HI-TECH Ball Bearing Caster with 7/8" to 15/16" Inside Dia. Square Tubing Expanding Adapter (MTG51) offers exceptional performance and durability for various industrial and commercial applications. Featuring HI-TECH ball bearings, this caster delivers smooth and reliable movement, even under heavy loads. The expanding adapter design ensures easy installation and a secure fit for square tubing with diameters ranging from 7/8" to 15/16". Whether used in machinery, equipment, or carts, this caster is built to withstand the rigors of demanding environments. The high-quality materials ensure long-term reliability, making it a cost-effective and trustworthy solution for your mobility needs.
We stand behind the quality of our 4" x 1.25" HI-TECH Ball Bearing Caster with Expanding Adapter (MTG51). Each caster is meticulously tested to meet industry standards for performance and durability, ensuring it meets the toughest demands of commercial and industrial environments. With our commitment to quality, you can trust that this product will provide you with dependable performance and long-lasting value. Backed by our customer satisfaction guarantee, this caster is an investment in efficiency and reliability for your business.
Transparent pricing
All pricing and quantity discounts are applied automatically. No promo codes required and no post-checkout price changes.
Upfront shipping costs
Shipping is calculated by order size and weight. Final shipping costs are shown before payment so there are no surprises.
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We support bulk orders, repeat purchases, and fast quotes for larger or custom requirements.
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Need help confirming fit, compatibility, or application? Our team works directly with engineers, maintenance teams, and buyers every day.
Trusted by industrial and commercial customers
CasterHQ supplies casters and wheels for manufacturing, material handling, retail, and distribution environments nationwide.
When will my order ship?
In-stock items typically ship same or next business day. Weekend orders ship Monday or Tuesday unless stated otherwise.
Will shipping cost more at checkout?
Shipping is not free on most orders. Your final shipping cost is shown before payment.
Central & Southern U.S.: typically 1–2 business days
East & West Coasts: typically 2–3 business days
Remote areas may take longer.
Some custom products (select Made in USA casters, keyway wheels, drive wheels) are built after purchase and ship on a longer lead time. When applicable, the ship-time estimate is shown on the product page.
Contact us before ordering and we’ll confirm total landed cost upfront. Contact us.
The 4" x 1.25" HI-TECH Ball Bearing Caster with Expanding Adapter (MTG51) is engineered to deliver smooth, reliable performance under heavy-duty industrial and commercial conditions. Designed with precision and durability in mind, this caster offers exceptional mobility and ease of use, even in the most challenging environments.
Designed for demanding industrial and commercial applications, this caster offers both reliability and ease of use. The heavy-duty construction ensures that it can withstand heavy loads, while the smooth ball bearing system provides effortless movement for machinery and equipment. The durable polyurethane wheels offer an ideal balance of impact resistance and traction, making it a versatile choice for various surfaces and environments.
The expanding adapter allows for quick installation and easy adjustments to fit square tubing sizes ranging from 7/8" to 15/16". Combined with its corrosion-resistant zinc finish, the caster offers long-term reliability and minimal maintenance, making it an excellent investment for businesses looking to optimize their operations.
With its robust design and high-quality materials, this 4" x 1.25" HI-TECH Ball Bearing Caster is an essential component for industrial and commercial settings. Whether you're upgrading existing equipment or building new machinery, this caster provides smooth movement, durability, and versatility across a range of applications. The combination of precision engineering and high-performance materials makes it an ideal solution for industries that demand reliability and efficiency.
Our 4" x 1.25" HI-TECH Ball Bearing Caster is crafted to meet the highest industry standards for performance and durability. It undergoes rigorous testing to ensure it can handle the toughest tasks, and our commitment to quality means we stand behind the product with a 3-year warranty. Whether you need to enhance your business’s operations or upgrade your equipment, you can trust this caster to provide years of reliable service.
$68.00
Designed for engineers, manufacturers, and material handling professionals