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Mercury Floor Machines UWK Unicorn Weight Kit – 5 x 10 lbs, Up to 50 lbs Added Pressure

Mercury Floor Machines UWK Unicorn Weight Kit – 5 x 10 lbs, Up to 50 lbs Added Pressure

Brand: Mercury Floor MachinesSKU: UWKIn Stock – Ready to Ship
$262.00

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Mercury UWK Unicorn Weight Kit: 50 lbs of Additional Pad Pressure for Mercury Floor Machines

The UWK Unicorn Weight Kit contains five 10-pound weights and the Unicorn mounting hardware needed to attach them to Mercury Lo-Boy, Hercules, or BOSS floor machines. Adding all five weights increases the machine's total pad pressure by up to 50 lbs — a meaningful increment on stripping and heavy scrubbing tasks where pad-to-finish contact force determines how many passes are needed to complete the job.

UWK Specifications and Compatibility

  • Weight configuration: 5 individual 10-pound weights — can be added in increments of 10 lbs (10, 20, 30, 40, or 50 lbs total)
  • Mounting system: Unicorn mounting hardware — attaches to the machine's apron without permanent modification
  • Compatible machines: Mercury Lo-Boy series, Mercury Hercules series, Mercury BOSS series
  • Installation: No special tools required; weights attach and remove without disassembly

When Additional Pad Pressure Improves Stripping and Scrubbing Results

Pad pressure determines how much mechanical force contacts the floor finish per square inch. On a standard Mercury Lo-Boy L-21E at 105 lbs, pad pressure is fixed at the machine's weight. Adding 50 lbs via the UWK increases that to 155 lbs — a 48% increase in downward force on the same 21" pad. This is mechanically significant for stripping tasks: thicker finish layers, multi-coat buildup without interim strip cycles, and older finish that has hardened over time all resist the chemical-mechanical action of the stripping pad. The additional 50 lbs of pressure increases the pad's contact force at the finish surface, which combined with the appropriate chemical dwell time, can convert a two-pass strip to a single-pass strip on most standard commercial finish systems. For a Hercules machine already at 106–108 lbs, the UWK pushes total machine weight to 156–158 lbs — approaching the output of a ride-on floor machine for the largest apron sizes. The weights can also be added in partial increments: 20 lbs for light scrubbing improvement, 30 lbs for standard stripping enhancement, 50 lbs for maximum stripping force on resistant finish.

Unicorn Mounting Hardware and Weight Placement

The Unicorn mounting hardware attaches to specific receiver points on Mercury Lo-Boy, Hercules, and BOSS aprons. Weights stack on the apron deck or fit into the designated mounting positions depending on the machine model. The mounting hardware is designed to prevent the weights from shifting during machine operation — a weight that moves during a stripping pass creates uneven pad pressure that leaves marks on the finish surface. Weights are removed between jobs or when switching from stripping to polishing: adding 50 lbs to a buffing or spray-buffing task increases pad friction heat and can damage finish rather than improving it. Use the full 50 lbs only for stripping and heavy scrubbing with black or green pads; reduce or eliminate added weight for maintenance buffing with white or tan pads.

Specification Value
Model UWK
Number of Weights 5 x 10 lbs each
Maximum Added Weight 50 lbs
Mounting System Unicorn mounting hardware (included)
Compatible Machines Mercury Lo-Boy, Hercules, BOSS

Manufacturer's Warranty

This product comes with a full manufacturer's warranty. All warranty claims are handled directly by the manufacturer.

For specific warranty details, please contact us at +1 (978) 295-7538 or email info@uscleaningtools.com

B2B & Tax-Exempt Purchases

We supply contractors, restoration companies, property managers, schools, government agencies, and other tax-exempt organizations.

How to place a tax-exempt order:

  1. Write to us through our Contact Us page or email info@uscleaningtools.com and attach your valid tax exemption certificate (state resale or exemption certificate).
  2. We verify your certificate and mark your account tax-exempt — usually within one business day.
  3. Place your order and sales tax will not be charged.

For volume pricing or purchase orders, call +1 (978) 295-7538.

Shipping & Returns

Free shipping on most brands for orders over $300, delivered to the lower 48 states. Any brand-specific freight rate is shown at checkout before you pay.

Processing & delivery: in-stock orders are processed within 1–2 business days and typically deliver in 5–7 business days. Tracking is emailed within 24 hours of shipment. Built-to-order and backordered equipment shows its lead time on this page.

Freight deliveries: inspect your equipment on arrival and note any damage on the delivery receipt. Items damaged in transit or defective on arrival are fully covered at no cost to you.

Cancellations: cancel any time before your order ships for a full 100% refund.

30-day returns: return unused equipment in its original packaging within 30 days of delivery. Change-of-mind returns are subject to a restocking fee. To start a return, email info@uscleaningtools.com or call +1 (978) 295-7538.

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Frequently Asked Questions

Can I add fewer than all 5 weights at once?
Yes. The UWK includes five individual 10-pound weights that can be installed in any combination — 10, 20, 30, 40, or 50 lbs of additional pressure. For light scrubbing improvement, 20 lbs is typically sufficient. For standard stripping on well-maintained finish, 30 lbs is commonly used. The full 50 lbs is recommended for stripping resistant or multi-layer finish that has not been stripped in multiple cycles.
Which Mercury machines is the UWK compatible with?
The UWK is compatible with Mercury Lo-Boy series machines (L-15E through L-21E), Mercury Hercules series machines (H-13E through H-21E), and Mercury BOSS series floor machines. The Unicorn mounting hardware attaches to specific receiver points on the apron of each compatible model — verify your machine model is in the compatibility list before ordering.
Should I use the weights for buffing or polishing tasks?
No. Use the UWK weights only for stripping (black pad) and heavy scrubbing (green pad). For spray buffing (red pad), maintenance buffing (white or tan pad), or burnishing tasks, remove the weights. Additional weight on polishing tasks increases pad friction heat and can streak, cloud, or damage the finish surface rather than improving gloss. The mechanical advantage of added weight is relevant only when pad resistance from finish removal is the limiting factor.
Does adding 50 lbs to a Hercules machine affect motor strain?
At 50 lbs added to a Hercules H-21E (108 lbs), total machine weight reaches 158 lbs. The Hercules motor (1.5 HP dual-capacitor A/C) and triple-planetary gearbox are rated for sustained heavy-load operation — the motor does not see significantly increased electrical load from the additional weight because the gearbox absorbs the mechanical resistance at the pad. The dual-capacitor design maintains power factor correction under sustained load, which is why Hercules machines are suited for extended stripping sessions.
How do I prevent the weights from shifting during a stripping pass?
Install the weights using the Unicorn mounting hardware fully seated in the receiver points on the apron. Do not stack weights beyond the mounting system's rated capacity or position them outside the designated mounting zones. Weights that are not fully engaged with the mounting hardware can shift when the machine changes direction, creating uneven pad pressure that leaves marks in the stripped finish. Check that all mounting hardware is tight before beginning each stripping session.

Frequently Asked Questions

1. What payment methods can I use?

We accept Visa, MasterCard, American Express, Diners Club, Discover, major debit cards, and digital wallets like PayPal, Google Pay, Meta Pay, and Apple Pay.

2. When will my payment be processed?

Your credit/debit card or PayPal account will be charged when you place your order. Secure payment processing protects your information.

3. Will I receive an order confirmation?

Yes, a confirmation email will be sent to the provided email address once the order is placed.

4. How long does it take to process an order?

Orders are processed within 1-2 business days and then prepared for shipment.

5. How long does it take for my order to arrive?

Estimated arrival time (ETA) is 5-7 business days for all orders.

6. Do you offer warranty?

All our products come with a manufacturer warranty of at least 1 year, depending on the brand.

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