DYNABRADE 8" (203 mm) Dia. Two-Hand Gear-Driven Sander, Non-Vacuum - 58445

DYNABRADE 8" (203 mm) Dia. Two-Hand Gear-Driven Sander, Non-Vacuum - 58445

• .45 hp, 900 RPM, Rear Exhaust, w/56236 Hook Face Pad.
• Unique epicycloidal sanding action allows aggressive removal of material. Applications include removal and leveling of large amounts of filler materials such as glue or epoxy; leveling small welds; removing coatings. For use on materials including metal, solid surfaces, wood and fiberglass.
• Ergonomically designed for low vibration and reduced sound levels.
• Excellent comfort and control, especially when working on vertical sides or large tabletops.
• Long handle allows for two-hand support of tool.
• Includes low profile, premium hook face sanding pad.

Specifications     

What our Experts Think

• 8" (203 mm) large sanding pad provides fast, high-coverage material removal for big surface areas
• Gear-driven dual-action system delivers strong cutting power and consistent performance under load
• Two-hand ergonomic grip design enhances stability, control, and operator safety during heavy-duty use
• Non-vacuum configuration keeps the tool lightweight and simple for industrial sanding tasks
• Ideal for leveling, smoothing, and surface preparation on large panels and flat surfaces
• Maintains consistent, swirl-free finish quality even in demanding production environments
• Built for continuous-duty industrial and fabrication applications
• Durable construction supports long service life in tough workshop conditions
• Suitable for automotive bodywork, metal fabrication, and large-scale refinishing projects
• Designed for professionals needing a powerful, straightforward gear-driven sanding solution for

   
Q&A  

Q: What is the DYNABRADE 58445 used for?
A: A heavy-duty pneumatic two-hand gear-driven sander designed for aggressive material removal, leveling fillers, weld smoothing, and surface preparation on large panels.

Q: What makes the gear-driven system different from a regular orbital sander?
A: It uses an epicycloidal (gear-driven) sanding motion instead of free orbital movement, giving faster, more aggressive stock removal and flatter surface leveling.

Q: What is the pad size?
A: It uses an 8" (203 mm) sanding pad, ideal for large surface areas like panels, tabletops, and structural parts.

Q: What type of finish does it produce?
A: It is designed for heavy cutting and leveling rather than fine finishing, making it best for early-stage surface prep.

Q: What is the motor power and speed?
A: It has a 0.45 HP pneumatic motor with a maximum speed of about 900 RPM for controlled, high-torque sanding.

Q: Is it vacuum-equipped?
A: No. This is a non-vacuum model, so dust is not actively extracted through the tool.

Q: What materials can it be used on?
A: Suitable for metal, wood, fiberglass, solid surfaces, and cured fillers or coatings.

 
Maintenance Tips  

• Use clean, dry compressed air: Moisture or contamination reduces motor efficiency and can accelerate internal wear.
• Lubricate daily: Add a few drops of pneumatic tool oil before use to protect the air motor and maintain smooth power delivery.
• Maintain correct air pressure (~90 PSI): Ensures stable 900 RPM operation and prevents gear stress under load.
• Inspect gear-driven head & pad system: Check for abnormal noise, vibration, or looseness—gear wear shows up early as rough operation.
• Replace worn 8" pads promptly: Damaged or unbalanced pads increase vibration and reduce finish quality.
• Keep spindle and pad mounting clean (5-screw mount): Dust buildup can cause imbalance and uneven sanding.
• Check air hoses and fittings: Air leaks reduce torque and increase compressor load.
• Keep rear exhaust clear: Ensures proper cooling and prevents heat buildup during heavy material removal.
• Clean after each use: Remove filler, epoxy, and dust buildup from housing and pad face area.
• Store in a dry environment: Prevent corrosion inside the motor and gear system during downtime.