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ALBION

Albion 4"x2" Polypropylene Total Lock Caster – 4"x4.5" Plate | CasterHQ

Wheel
4" x 2"
Capacity
500 lbs
Overall Height
5.63"
Plate Size
4" x 4-1/2"
In Stock · Ships in 1-3 Business Days
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Business Purchasing
  • Purchase orders accepted for approved accounts
  • Net 30 terms for qualified businesses
  • ACH, credit card, and tax-exempt ordering
  • Bulk and contract pricing on fleet quantities
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Product Overview
At a glance
Load capacity500 lbs
Wheel4" × 2" Polypropylene
MountPlate — 4" x 4-1/2"
TypeSwivel with Total Lock Brake with brake
Overall height5.63"
Temperature-20°F to 180°F

4" x 2" Industrial Line - USA Rig Polypropylene Delrin Bearing Wheel Caster with Top Total Lock and 4" x 4.5" Plate - 16PB04251ST


Product Features

  • Wheel Diameter: 4 inches
  • Wheel Width: 2 inches
  • Plate Size: 4 inches x 4.5 inches
  • Type: Polypropylene Delrin Bearing Wheel Caster
  • Material: Polypropylene Wheel with Delrin Bearing
  • Lock Type: Top Total Lock
  • Model Number: 16PB04251ST
  • Load Capacity: Designed for heavy-duty use with exceptional durability and performance

Enhance your industrial setup with the 4" x 2" Industrial Line USA Rig Polypropylene Delrin Bearing Wheel Caster. This caster combines a robust polypropylene wheel with a Delrin bearing, offering smooth and reliable performance even in demanding environments. The 4" x 4.5" plate ensures secure mounting and stability, while the Top Total Lock feature provides reliable braking for secure positioning. Perfect for heavy-duty applications, this caster is engineered for durability and ease of use, making it an excellent choice for various industrial and commercial settings. Improve your equipment’s mobility and functionality with this high-quality caster, designed to meet the highest standards of performance and reliability.

Key Features

Top 10 Product Features

  • Wheel Diameter: 4 inches, providing a balanced size for various industrial applications.
  • Wheel Width: 2 inches, ensuring stability and load distribution.
  • Plate Size: 4 inches x 4.5 inches, designed for secure attachment and enhanced stability.
  • Type: Polypropylene Wheel with Delrin Bearing, offering smooth and quiet operation.
  • Lock Type: Top Total Lock, allowing for complete immobilization of the caster when needed.
  • Material: High-quality Polypropylene Wheel with Delrin Bearing for durability and resistance to wear.
  • Model Number: 16PB04251ST, ensuring compatibility and easy identification.
  • Load Capacity: Engineered for heavy-duty use, providing reliable performance under rigorous conditions.
  • Design: Industrial-grade construction, making it suitable for demanding environments such as warehouses and factories.
  • Enhanced Mobility: The combination of Polypropylene and Delrin materials ensures smooth rolling and easy maneuverability.
Ordering & Shipping Information

Order processing

In stock. Orders placed before 12pm CT (Mon–Fri) typically ship the same or next business day from our Mansfield, TX warehouse.

Shipping method

Smaller orders ship parcel (UPS/FedEx Ground). Heavy or bulk quantities consolidate to LTL freight. The method and final cost are shown before payment, so there are no post-checkout adjustments.

Payment & procurement terms

Purchase orders — accepted from approved accounts
Net 30 terms — available on approved credit
ACH & all major cards — Visa, MC, Amex, Discover
Tax-exempt — submit your resale/exemption certificate

New to CasterHQ? Open an account or request terms and send your resale or tax-exemption certificate before ordering so it is applied at checkout.

Volume pricing & quotes

Quantity discounts apply automatically — no codes needed. For large, recurring, or custom requirements, request a bulk quote and our team will confirm pricing, lead time, and total landed freight upfront.

Returns & warranty

Stock items carry a 30-day return policy in unused, resalable condition. Made-to-order and custom items are non-returnable once production starts. All products carry the manufacturer's warranty against defects.

Typical transit times after shipment

Central & Southern U.S.: typically 1–2 business days
East & West Coasts: typically 2–3 business days
Remote areas and freight deliveries may take longer.

Need an exact freight quote or blanket PO?

For pallet freight, scheduled releases, or blanket purchase orders, contact our team and we'll confirm total landed cost before you commit. Direct line: 844-439-4335.

Additional Information

Albion Casters 4" x 2" Industrial Line - USA Rig Polypropylene Delrin Bearing Wheel Caster with Top Total Lock and 4" x 4.5" Plate - Model 16PB04251ST


Product Overview

The Albion Casters 4" x 2" Industrial Line Caster is designed to meet the demands of heavy-duty applications. This caster combines robust materials and advanced engineering to provide superior performance and reliability. Featuring a polypropylene wheel with a Delrin bearing, it ensures smooth and quiet operation, making it ideal for industrial settings where durability and ease of movement are essential.

Benefits

The Albion Casters 4" x 2" Industrial Caster is engineered for heavy-duty use, offering a combination of strength, stability, and ease of movement. Its polypropylene wheel with Delrin bearing ensures a smooth rolling experience, while the Total Lock Brake provides added security when stationary. The caster’s durable construction and corrosion-resistant zinc finish make it an ideal choice for demanding industrial environments.

Frequently Asked Questions

What is the load capacity of this caster?+

This Albion 16PB04251ST 4"x2" Polypropylene Total Lock Caster – 4"x4.5" Plate is rated to 500 lbs per caster. Size a set by dividing the total load by the number of casters, and for uneven floors assume 3 of 4 casters carry the load. Keep continuous-use loads within about 75-80% of the rating.

What wheel does this caster use?+

This caster runs a Polypropylene wheel with a 2" tread width. Polyurethane protects finished floors, rolls quietly, and resists most chemicals while carrying heavy loads.

What plate size and bolt pattern does it use?+

This caster uses a top-plate mount with a 4" x 4-1/2" plate and a 2-5/8" x 3-3/8" slotted to 3" x 3" bolt pattern. Measure your existing mounting holes before ordering; if you are replacing casters, match the bolt pattern - most standard patterns interchange across brands.

Is this a swivel or rigid caster, and how does the brake work?+

This is a Swivel with Total Lock Brake caster with a wheel brake. Swivel casters rotate 360 degrees for full maneuverability. The brake locks the wheel to hold the load in place. For most mobile equipment we recommend 2 swivel + 2 rigid, or 4 swivel with at least 2 brakes.

What temperature range can this caster handle?+

Rated for -20°F to 180°F. Operating outside the rated range can reduce wheel life and load capacity, so match it to your environment (wash-down, freezer, oven-adjacent, etc.).

What floors and applications is it best for?+

The Polypropylene wheel performs best on smooth to semi-smooth floors including sealed concrete, tile, and epoxy. For non-marking or clean-environment needs, ask us about matching tread options.

What is the overall mounted height?+

The overall height (floor to top of plate or stem) is 5.63". Account for it when checking equipment clearance, dock height, and ergonomic working height.

How do I order, and what are the terms?+

We accept purchase orders and offer Net 30 on approved accounts, ACH, and all major cards, plus tax-exempt ordering with a resale or exemption certificate. Volume discounts apply automatically; request a bulk quote for large or recurring orders. Stock items carry a 30-day return policy in unused condition (made-to-order items are non-returnable once production starts).

Albion 16PB04251ST 4
Albion 16PB04251ST 4"x2" Polypropylene Total Lock Caster – 4"x4.5" Plate | CasterHQ

$91.00

Technical Specifications

Identification
Brand Albion Casters
Dimensions & Mounting
Wheel Diameter 4"
Wheel Tread Width 2"
Overall Height 5.63"
Plate Size 4" x 4-1/2"
Bolt Hole Pattern 2-5/8" x 3-3/8" slotted to 3" x 3"
Mount Style Plate
Rig Type Swivel with Total Lock Brake
Load & Performance
Wheel Capacity 500 lbs
Temp Range -20°F to 180°F
Brake Type Total Lock Brake
Materials & Finish
Wheel Material Polypropylene
Frame Material Zinc Plated Steel
Reference Dimensions
BRAKE 5.63" OVERALL HEIGHT 4" x 2" WHEEL DIA x W 4" x 4-1/2" PLATE
Overall Height5.63"
Wheel4" x 2"
Top Plate4" x 4-1/2"
Bolt Pattern2-5/8" x 3-3/8" slotted to 3" x 3"
Wheel MaterialPolypropylene
Illustrative caster profile drawn to this item's proportions — dimensions are manufacturer specification values. Confirm against the technical table before ordering.
Will This Caster Handle Your Load?
Enter your loaded weight — we derate to 3 effective casters on a 4-caster rig, per industry practice for uneven floors.
Rated capacity: 500 lbs per caster. For dynamic loads, towing, or debris-strewn floors, apply additional safety factor · full engineering tools →
Fitment & Interchange
MountPlate
Plate Size4" x 4-1/2"
Bolt Pattern2-5/8" x 3-3/8" slotted to 3" x 3"
Rig TypeSwivel with Total Lock Brake
BrakeTotal Lock Brake
Slotted holes — fits multiple bolt patterns, ideal for retrofits
Replacing an existing caster? Match the bolt pattern first, then wheel size · more 4" x 4-1/2" plate casters →

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