6″ Extra Heavy Polyurethane on Aluminum – Kingless Swivel G15 Caster

FAQ

What is the Plate Caster Model G15?

The Plate Caster Model G15 is a kingpinless heavy-duty industrial swivel caster with a precision machined swivel bearing for superior performance on manually moved and mechanically powered equipment. It features zinc plating for rust resistance, lubrication fittings for all movable parts, and a hot-forged construction with 1/4” thick legs welded to the swivel bearing. The caster has a 1/2” diameter axle with a locking nut and offers a broad selection of wheel brakes and swivel locks. Available in standard and 304 stainless steel versions, it’s NSF and ROHS compliant in stainless for wet or corrosive applications.
What environments and applications work best for the Plate Caster Model G15?

This kingpinless caster is designed for industrial environments like manufacturing, warehousing, food processing, pharmaceuticals, hospitals, and automotive plants, handling heavy loads on smooth floors with manual or powered movement. It’s ideal for carts in wet, corrosive, or washdown areas (stainless version) and reduces vibration for sensitive equipment. The larger swivel radius option for 6” and 8” wheels eases direction changes on ramps or long distances.
What is the load capacity of the Plate Caster Model G15?

The Model G15 supports up to 1,500 lbs per caster, but capacities vary by wheel—many achieve higher ratings than in Model 9, with some wheels up to 2,500 lbs. It’s rated for manual or powered use on smooth floors, no inclines over 3 degrees, speeds under 3 mph. Rigid versions can carry more due to no offset, but rated the same as swivel. For powered towing, reduce capacity by 25%.
What wheel options are available for the Plate Caster Model G15?

The Model G15 offers the same wide selection of 2” wide wheels as Model 9, including moldon rubber, soft gray rubber, neoprene, high capacity rubber, polyurethane on iron (green, red, blue, crown), self-energizing ergonomic polyurethane (orange, crown), polyurethane on aluminum/polyolefin (various colors), poly on glass-filled nylon, all polyurethane (blue, gray heavy duty), polyolefin (black, high capacity), nylon (white, black, high capacity), phenolic, gray iron, ductile steel (standard, crown, bronze bearing), ultra high capacity polymer, V-groove iron/ductile steel, high temp glass-filled nylon/phenolic, and forged steel. Diameters: 4”, 5”, 6”, 8”. Many NSF/ROHS compliant, with higher capacities in G15 (e.g., up to 2,500 lbs on some wheels).
What bearing options are available for the Plate Caster Model G15?

Bearing options include roller bearings (R), Delrin bearings (D), plain bore (P), ball bearings (B), precision sealed ball bearings (PS), stainless precision sealed ball bearings (SSPSBB), and stainless roller bearings (SSR). These allow customization for wet, high-load, or corrosive environments, ensuring smooth operation.
What brake options are available for the Plate Caster Model G15?

The Plate Caster Model G15 offers four brake options: TB – Top Lock Brake (pedal on side of wheel, locks wheel from rolling, suitable for high-temperature applications), TL – Total Locking Brake (pedal behind wheel, prevents both wheel and swivel movement), UFCB – Universal Bolt On Face Contact Brake (field-installable, cost-effective, locks wheel by pressing against its face), and FCB – Heavy Duty Weld-On Face Contact Brake (robust, permanently welded, locks wheel for heavy-duty use). Brakes are not designed for inclines; TB is unavailable with V-groove or long lead swivels. Stainless versions include stainless brakes for washdown areas.

What swivel lock options are available for the Plate Caster Model G15?

The Model G15 provides two swivel lock options: SL4 – Four Position Swivel Lock (welded on, converts swivel to rigid in four positions for straight-line travel) and BSL4-FO – Bolt On Four Position Swivel Lock (field-installable, converts swivel to rigid in four positions). These locks are ideal for ramps or long distances in industrial settings like warehouses and are available in stainless steel for corrosive environments. They lock the swivel only, not the wheel.

How do the brake and swivel lock options enhance the Plate Caster Model G15’s functionality?

The G15’s brake options (TB, TL, UFCB, FCB) provide versatile locking for wheels or both wheel and swivel, catering to high-temp, cost-effective, or heavy-duty needs, while swivel locks (SL4, BSL4-FO) ensure straight-line stability for ramps or long-distance travel. Stainless versions suit washdowns; TB and UFCB offer flexibility, while TL and FCB provide robust locking. Not for inclines; consult for V-groove or long lead compatibility.
How do I maintain the Plate Caster Model G15?

Lubricate swivel bearing and axle via fittings regularly for smooth movement. Clean after use, especially in wet environments; avoid prolonged standing loads, shock, or impacts. For stainless models, rinse post-washdown. Inspect for wear; avoid sideways dragging or bad welding during install to prevent distortion.
Where can I buy the Plate Caster Model G15?

Get the Model G15 from Caster City’s website at www.castercity.com or call 800-501-3808. Lead time is usually 2 days for fast delivery, with standard zinc-plated or 304 stainless steel options.
How does the Plate Caster Model G15 compare to Model 9?

The G15 is an upgrade from Model 9 with a kingpinless design for better swivel rotation, reduced vibration, and longer life in powered applications. It uses the same wheels but often with higher capacities (up to 1,500 lbs vs. Model 9’s 1,250 lbs). G15 handles abuse better; Model 9 suits lighter manual use. Both zinc-plated, but G15 offers long lead swivel and stainless for corrosive settings.
What’s the difference between swivel and rigid versions of the Plate Caster Model G15?

Swivel versions feature a kingpinless precision bearing for easy turning under heavy loads, with welded 1/4” legs. Rigid versions lack swivel for straight-line stability, ideal for ramps or long distances—install opposite push handle for control. Rigid can carry more (no offset) but rated same. Both use 1/2” axle for 2-7/16” hub, stamped steel (or stainless), and same wheels. Rigid legs are 1/4” thick, designed for straight travel and easier control in manual pushing.
What is the kingpinless design in the Plate Caster Model G15?

The G15’s kingpinless design uses a precision machined load/thrust bearing without a center pin, improving load distribution, swivel ease, and durability over kingpin casters. This hot-forged setup with welded legs reduces vibration and extends trouble-free performance for manual or powered equipment.
What is the long lead swivel option for the Plate Caster Model G15?

Available for 6” and 8” wheels, the long lead increases swivel radius (to 5-3/4” for 6”, 7-3/4” for 8”), reducing shimmy/vibration and easing direction changes—great for powered carts or uneven floors. Not with TB brakes; enhances stability in industrial use.
What are the overall heights for the Plate Caster Model G15 with different wheel diameters?

Overall heights: 4” wheel – 5-5/8”; 5” wheel – 6-1/2”; 6” wheel – 7-1/2”; 8” wheel – 9-1/2”. Swivel radius standard: 3-1/4” (4”), 4” (5”), 4-3/4” (6”), 6-1/8” (8”); long lead adds for 6”/8”.
What construction details make the Plate Caster Model G15 durable?

The G15 uses hot-forged steel with 1/4” thick welded legs, zinc plating for rust resistance, and kingpinless bearing for heavy loads. Lubrication fittings for all parts; 1/2” hollow axle with lock nut. Stainless (304) version for wet/corrosive use, NSF/ROHS compliant, with same wheels.
Can the Plate Caster Model G15 handle high temperatures?

Yes, with high-temp wheels like glass-filled nylon or phenolic (up to 550°F intermittent), but capacity drops over 40 minutes at peak temps. Standard for room temp; stainless for wet high-heat like autoclaves. Consult for specifics.
What installation tips are there for the Plate Caster Model G15?

Mount with at least 4 bolts on plate (not included); ensure rigid parallel, swivels level. Avoid welding distorting bearings or sideways dragging. For long lead, position for stability. Test on smooth floors; reduce capacity for inclines/powered. Stainless for washdown—rinse after.
What’s the weight of the Plate Caster Model G15 swivel version?

Swivel weights 5-17 lbs depending on wheel (e.g., 5 lbs for 4” polyolefin, 17 lbs for 8” ductile steel); rigid slightly lighter. Add for brakes/locks. Stainless similar but corrosion-resistant.
What is 304 stainless steel in the Stainless Steel Plate Caster Model G15?

304 stainless steel is an austenitic alloy (18% chromium, 8% nickel) offering excellent corrosion resistance to rust and chemicals. Used in SS G15 frame for wet/corrosive applications, NSF/ROHS compliant, ideal for food processing or pharma.
What applications is the caster best for?
Here’s a comprehensive list of applications for the Plate Caster Model G15, suitable for heavy-duty industrial uses:

• Manufacturing plants for machinery and assembly line carts.
• Warehouses for pallet jacks and heavy material handling trolleys.
• Food processing facilities for washdown-resistant equipment movers (stainless version).
• Pharmaceutical labs for sterile transport carts in cleanrooms.
• Hospitals for medical equipment and bed frames requiring smooth movement.
• Automotive shops for tool chests and engine hoists.
• Aerospace hangars for ground support equipment and airframe maintenance stands.
• Distribution centers for powered towing of stock carts.
• Marine settings for dock cargo carts (stainless version).
• Chemical plants for container transport in corrosive areas.
• Construction sites for material handling carts and heavy machinery transport.
• Loading docks for platform trucks and conveyors.
• Engine dollies and high capacity die tables in industrial fabrication.
• High-speed towing applications by fork trucks or tuggers.
• Shipping container dollies and offshore platform storage units (stainless for saltwater).
• Curing ovens for composite panel processing (high-temp wheels).
• Marine and fisheries for saltwater-resistant equipment (stainless version).
• Ground support equipment in aviation, like aircraft engine stands.
• Heavy-duty power drawn equipment in factories.
• Track-guided systems with V-groove wheels for assembly lines.

The G15’s kingpinless design reduces vibration for sensitive loads, while the rigid version aids straight travel on ramps. For powered use, it excels in reducing wear in food processing, pharma, or marine settings in wet conditions (stainless version).
What are the technical specifications for the Plate Caster Model G15?

Mounting plate: 4” x 4-1/2” (bolt spacing 2-5/8” x 3-5/8” to 3” x 3”); larger optional for 6”/8”: 4-1/2” x 6-1/4”. Hub length: 2-7/16”. Stainless version NSF/ROHS compliant.
Why choose the Stainless Steel Plate Caster Model G15?

The SS G15, made from 304 stainless steel, is excellent for wet or corrosive applications with total weights over 1,000 lbs. It’s NSF/ROHS compliant, with the same wheel selection (many compliant) as standard, offering kingpinless benefits for powered use in food processing, pharma, or marine settings. The stainless construction ensures longevity in washdown areas, lasting in harsh conditions.
What is the larger mounting plate option for the Plate Caster Model G15?

For 6” and 8” wheels, an optional larger mounting plate (4-1/2” x 6-1/4”) is available, providing greater stability for heavy loads in industrial applications like powered towing or high-capacity carts. Standard plate is 4” x 4-1/2”.
Can the Plate Caster Model G15 be used for powered equipment?

Yes, the G15 is built for mechanically powered equipment like fork trucks or tuggers, with its kingpinless design reducing wear and vibration at speeds up to 3 mph. For towing, reduce capacity by 25% and use long lead swivel for better control. Not for continuous high-speed use; consult for recommendations.
What makes the Plate Caster Model G15 suitable for track-guided systems?

With V-groove wheels (iron or ductile steel), the G15 is perfect for track-guided applications like assembly lines or conveyor systems, ensuring smooth rolling on rails. The kingpinless design handles side thrust loads, and rigid versions provide straight-line stability for industrial automation. Capacities up to 1,500 lbs.
Is the Plate Caster Model G15 NSF and ROHS compliant?

The stainless steel version (SS G15) is fully NSF and ROHS compliant, including many wheel options, ensuring hygiene and environmental safety for food service, pharma, or cleanrooms. This certification means no harmful substances and suitability for washdowns. Standard zinc-plated model is for general use but not certified.
How does the Plate Caster Model G15 reduce vibration?

The kingpinless precision bearing and hot-forged construction minimize vibration, protecting sensitive equipment like medical devices or electronics. Soft wheels (e.g., rubber or polyurethane) further absorb shocks, making it suitable for hospitals or labs where smooth, quiet operation is essential.
What is the hub length and axle specification for the Plate Caster Model G15?

Hub length is 2-7/16” for all wheels, with a 1/2” diameter hollow bolt axle and lock nut for secure, easy installation. This design supports heavy loads and allows quick wheel changes in industrial settings.
Can the Plate Caster Model G15 be customized?

Yes, customization includes wheel type, bearing, brake/lock options, mounting plate size (larger for 6”/8” wheels), and long lead swivel. Stainless steel for corrosive use; contact 800-501-3808 for specific needs like high-temp or V-groove setups.
What are the benefits of the zinc plating on the Plate Caster Model G15?

Zinc plating provides rust resistance for general indoor use, extending caster life in humid or mildly corrosive industrial environments. For more aggressive settings, choose the 304 stainless steel version for superior protection against chemicals and washdowns.
How does the Plate Caster Model G15 improve maneuverability?

The kingpinless design and precision bearing enable easier swivel rotation under heavy loads, while the long lead increases effort for direction changes. This makes it ideal for powered towing in warehouses or manual pushing in tight manufacturing spaces.
What are the advantages of the rigid Plate Caster Model G15?

The rigid G15 aids straight-line travel, making it easier to control carts on ramps or long distances—install opposite push handle for ergonomic steering. With no offset, it handles higher loads than swivel (though rated same), and its 1/4” thick legs provide stability for heavy-duty applications like conveyor systems.
Why is the Plate Caster Model G15 better for powered equipment?

The kingpinless design distributes loads evenly, reducing wear from side thrust in towing or powered applications. It handles speeds up to 3 mph with less vibration than kingpin casters, making it suitable for fork trucks or tuggers in distribution centers—reduce capacity 25% for towing.
What high-temperature wheel options are available for the Plate Caster Model G15?

High-temp wheels include glass-filled nylon (up to 490°F) and phenolic fiberglass (up to 550°F intermittent), suitable for ovens or autoclaves. Ductile Steel, Iron, and Forged Steel Wheels are Also Choices. Caster City also stocks Solid Stainless Steel Wheels suitable for certain high temperature applications. Capacities drop with prolonged heat; stainless G15 for wet high-temp use like food processing. Consult for ratings.
How does the Plate Caster Model G15 perform on uneven floors?

Best on smooth floors, but soft wheels (rubber/polyurethane) absorb minor unevenness, and long lead swivel reduces shimmy. For rough surfaces, choose larger diameters or V-groove for tracks. Avoid poor floors to prevent wear.
What are the mounting plate specifications for the Plate Caster Model G15?

Standard mounting plate: 4” x 4-1/2” (bolt spacing 2-5/8” x 3-5/8” to 3” x 3”). Larger optional plate for 6”/8”: 4-1/2” x 6-1/4”. Use at least 4 bolts (3/8” recommended); don’t drill until receipt, as hardware not included.
Is the Plate Caster Model G15 suitable for outdoor use?

Limited outdoor use on smooth surfaces; zinc plating resists mild rust, but stainless for wet/corrosive outdoors like marine docks. Avoid rough terrain or inclines over 3 degrees; V-groove for tracks. For powered outdoor, reduce speed/capacity.
What makes the Plate Caster Model G15 NSF and ROHS compliant?

The stainless steel version (304 steel frame) and select wheels are NSF and ROHS compliant, ensuring hygiene and environmental safety for food service, pharma, or cleanrooms. This certification means no harmful substances and suitability for washdowns. Standard zinc-plated model is for general use but not certified.

What is the green extra thick CP industrial caster wheel designed for?
The green extra thick CP industrial caster wheel was specifically designed for power towed applications, where it handles the heavy demands of towing equipment. It features a durable green polyurethane tire that’s built to endure the intense abuse and wear that comes from power towing, making it ideal for tough industrial environments.

What sizes does the CP caster wheel come in?
This caster wheel is 2” wide and manufactured only in 6” and 8” diameters. It includes extra-large ball bearings that are reduced using top hat spanners to fit a ½” axle, ensuring smooth operation and easy installation in compatible setups.

Does a polyurethane caster wheel roll easier than a rubber one?
Yes, under the same size load on a smooth floor, a polyurethane caster wheel rolls easier than a conventional rubber caster wheel. Overall, polyurethane wheels provide better rolling performance on smooth surfaces compared to rubber ones, which can help reduce effort in moving loads.

What’s the durometer of the CP caster wheel and how is the tire made?
The CP industrial caster wheel has an extra-thick polyurethane tire that’s chemically bonded to a sturdy aluminum center, with a durometer rating of Shore 80A. This construction ensures strong adhesion and reliable performance in demanding uses.

How does the extra thick tire help with debris?
The soft, extra thick tire reduces rolling resistance when encountering debris or small objects on the floor. In practice, this extra thick and soft polyurethane tire allows the wheel to roll over such obstacles more easily, improving mobility in less-than-perfect conditions.

Will the CP wheel pick up metal shavings?
It’s largely untrue that a generic 95A polyurethane wheel is all you need to prevent metal shavings from FOD embedding into the tread surface. What really works well for us, particularly in high-risk areas like airport flightlines and tarmacs where rivets from fuselages are scattered on the ground, is this CP product. It’s a premier choice for environments where you’re rolling over metal shavings and need a wheel that’s fairly resistant to picking them up. With a durometer around 80A, the extra resilience of the poly material combined with the increased tread thickness helps reduce the chance of metal shavings sticking in the wheel. In contrast, a harder 95A poly wheel tends to let shavings embed more easily, leading to premature tire failure.

Why are most 95A poly tires thin?
Most 95A poly tires are typically thin by design. This thinness helps them dissipate heat more effectively during use, and they also depend on their metallic cores to serve as a heat sink, drawing away and releasing built-up heat to prevent issues.

How does polyurethane handle heat in wheels?
Polyurethane is a poor conductor of heat, meaning it doesn’t transfer heat well. In wheels, this leads to heat buildup from friction during rolling and repeated usage; since it can’t dissipate the heat easily, it keeps accumulating until failure occurs (known as hysteresis). Ultimately, the polyurethane can liquify from the inside out, resulting in a catastrophic breakdown from ongoing heat accumulation.

What makes the CP wheel different in handling impacts and shavings?
The CP wheel stands out as an extremely thick and extremely soft wheel, featuring special additives in the polyurethane that enhance its ability to absorb impacts. The poly material offers extra resiliency, meaning it flexes and essentially spits out metal shavings instead of letting them embed into the surface like they would on a hard, thin tire.

Where can I get the CP caster wheel?
Caster City manufactures this industrial caster wheel in 6” and 8” diameters, all 2” wide, complete with top hat spanners for a ½” axle. You can find the 6″ version at https://castercity.com/product/6-extra-thick-polyurethane-on-aluminum-wheel/ and the 8″ at https://castercity.com/product/8-extra-thick-polyurethane-on-aluminum-wheel/. These are priced above average, but we can arrange an aggressive deal for you—it’s definitely the top choice for a reliable poly wheel.

How are these caster wheels made?
These caster wheels are produced using liquid cast polyurethane directly onto aluminum centers, creating a seamless and robust bond for long-lasting performance.

What are the tire properties of these wheels?
They come with non-marking polyurethane tires that roll easier than gray rubber wheels on smooth floors, making them a practical upgrade for cleaner, more efficient movement in various settings.

What chemicals and applications can these wheels handle?
These wheels can withstand exposure to a wide range of chemicals and solvents. They’re suitable for industrial applications as long as they avoid extreme conditions like shock, overloading, abuse, obstructions, poor floors, or prolonged storage under standing loads.

How does the CP wheel provide cushion?
The extra thick, softer durometer CP polyurethane on aluminum wheel delivers more cushioning compared to thinner polyurethane wheels, offering better shock absorption and a smoother ride over uneven surfaces.

What bearings does this wheel use?
This wheel is equipped with high efficiency extra large precision sealed ball bearings, which contribute to its smooth rolling and durability in heavy-duty applications.