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General Overview

The Onyx SXi 27" Lithium-Ion Burnisher is built for high-performance, eco-friendly floor care with advanced technology and operator-friendly design. Its patented floating shroud and integrated dust collection system capture fine polymer dust at the source, removing the need for post-burnish dust mopping. A micro-filter vacuum bag traps particles as small as 0.5 microns, helping create cleaner and healthier environments while meeting Green Seal GS-42 and LEED standards.

Powered by a 5 HP motor and a single lithium iron phosphate battery, this machine provides up to 2 hours of runtime on a full charge. With whisper-quiet operation, variable pad pressure, and onboard monitoring, the SXi 27" is designed to deliver outstanding results while reducing labor time and costs in commercial and institutional facilities.


Included in Your Package

  • Onyx 27" Lithium-Ion Powered Floor Burnisher

  • Single 60 AH Lithium Iron Phosphate Battery

  • Floating Dust Containment Shroud

  • Integrated Micro-Filter Vacuum Bag

  • Onboard Smart Battery Charger


Key Features

  • Lithium-Ion Battery Poweredย โ€“ Long runtime, fast recharge, no cords, no fuel.
  • Zero Emissions & Ultra-Quietย โ€“ Safe for schools, hospitals, retail, and high-traffic indoor spaces.
  • Propane-Grade Performanceย โ€“ All the gloss, none of the fumes.
  • Fewer Passes, Higher Glossย โ€“ Engineered for maximum shine with reduced labor and pad use.
  • Three Head Size Optionsย โ€“ย Easy head size change from 21", 24" or 27". Can we ordered in any of these three head sizes.ย 
  • Configuration Versatilityย โ€“ Variable speed range (600 - 1,800 RPM), onboard 10-gallon water tank for stripping/polishing use, wide range of pad/brush down-force adjustments.
  • Advanced Dust Controlย โ€“ Cleaner air, healthier workspace, and superior finish quality.

Specifications

Product Function Floor Burnishing
Operation Mode Walk-Behind Pad Assist
Horsepower 5hp
Performance 34,000 SqFt per hour
Working Width 27"
Run Time 2 Hours
Pad / Brush Size 27"
Sound Level Less than 63 dBA
Pad Speed 1000 - 2000 RPM
Warranty 5 years on battery, 1 year on machine, 90 days on wear items.
Solution Tank Capacity 8 Gallon
Headlight Included

Product Documents

SXiย Data Sheet

Product specification and additional features. ย 

Operator Manual

Full operation, maintenance, and safety guide.

Illustrated Parts List

Complete parts list and ordering information.

Wiring Diagram

Complete electrical wiring diagram for troubleshooting.

Manufacturer Warranty

All Onyx products purchased through Centra Supply carry Onyxโ€™s standard manufacturer warranty. Onyx units carry a 3/3/3/3 warranty โ€” 3 years on parts, labor, motor, and the rotationally-molded body. Coverage varies by product line โ€” contact us for the exact terms on this model.

To Claim: Email support@centrasupply.com with your order number, product model, and a description of the issue. Photos or video of the defect may be requested. Most claims are acknowledged the same business day.

Centra Supply is an authorized Onyx dealer โ€” your warranty is fully valid and manufacturer-backed.