Rupes 2" Air-Powered Mini Random Orbital Sander/Polisher


















Rupes 2" Air-Powered Mini Random Orbital Sander/Polisher

Rupes 2" Air-Powered Mini Random Orbital Sander/Polisher

Rupes 2" Air-Powered Mini Random Orbital Sander/Polisher
The Rupes TA50 2" Random Orbital Sander includes a 2" hook-style backing plate.To properly tighten or loosen the backing plate on the Rupes TA50 2" Random Orbital Sander, locate the slot that is cut into black collar just above the backing plate (as shown).  Grasp the backing plate and rotate it until a hex plug and a hole is visible through the slot.  Place an allen wrench or other tool into the hole and slowly rotate the backing plate until a second hole lines up (you'll know when it lines up because your wrench will drop into the 2nd hole).  The inner shaft will no longer be able to rotate, which will allow proper tightening or loosening of the backing plate.The Rupes TA50 2" Random Orbital Sander is compact, light, & powerful.The Rupes TA50 2" Random Orbital Sander is just one of several high-powered and specialized pneumatic tools offered by Rupes.  We regularly stock all of the tools shown.  The Mirka 32mm Vinyl-Faced Backing Plate is a must have for tight-area sanding & polishing tasks. When mounted to compact rotary or random orbital machines, these plates eliminate much of the difficulty and stress commonly associated with critical tight-area work.The Mirka 32mm Velcro-Faced Backing Plate is a must have for tight-area sanding & polishing tasks. When mounted to compact rotary or random orbital machines, these plates eliminate much of the difficulty and stress commonly associated with critical tight-area work.(10) P1500 or (10) P2000 Mirka Waterproof® Sanding Roses | 13µ(10) P2500 Purple Microstar Spot Repair Discs | 7µ                             (10) P3000 Green Microstar Spot Repair Discs | 5µ (regular or Silicon Carbide (SIC)             (10) P5000 Yellow Microstar Spot Repair Discs | 3µ                              The Mirka FD-1 Sanding Drum is built using a semi-rigid polyurethane foam topped with durable blue vinyl ends.<br/><br/>A sanding drum is the perfect handheld tool for all sorts of small sanding tasks. Use one in conjunction with a sanding rosette or disc for removing blend lines on airbrushed touch-ups, for leveling fills on rock chips, and for eliminating dirt nibs in factory or aftermarket paints.291.390/C | The Rupes® Nano Rotary-Action Extension Shaft is made specifically for use with the Rupes iBrid Nano Multi-Function Polisher. This extension adds 2-1/4" of length between the machine and its backing plate. It features M6-1.0 male thread on one end (which mounts into the machine), and M8-1.25 female thread on the other (Nano Backing Plates screw into this end).995.001 | Rupes BigFoot NANO 1-1/4" Velcro Backing Plate.996.001 | Rupes BigFoot NANO 2" Velcro Backing Plate.997.001 | Rupes BigFoot NANO 1-1/4" Vinyl Backing Plate.Stainless Steel 1.75" Extension (screws directly into the machine). Includes Mirka 1125G 1-1/4" Velcro Backing Plate. Thread: M6-1.0 male
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The Rupes TA50 Mini Random Orbital Sander/Polisher touts a spec sheet reminiscent of an F1 racing engine!  Random orbital machines have been around for decades, but this little jewel is small, lightweight, and spins its backing plate lightning-fast (up to 15,000 RPM!) 

   Little Taz dances the Two-step.
The Rupes TA50 (nicknamed Little Taz, in reference to the Tasmanian Devil) creates two separate motions, that combine to deliver fantastic sanding & polishing results.  "How does it work?" I'll attempt to explain.

If you were to grab ahold of the TA50's backing plate and give it a flick in either direction, the backing plate would free-spin, eventually coming to rest. The backing plate is able to rotate freely and at a random rate because it is bolted into a bearing-mounted spindle.  As you fire up the TA50, its motor force-drives the backing plate along a tiny orbital path.  Dynamic factors including speed, pressure, friction, bearing load, and orbit size combine to determine the frequency and direction of backing plate rotation.

The TA50's random orbital motion greatly minimizes clogging of the sanding disc, especially when compared to rotary or orbital-action machines. Should any unfortunate scouring of the surface occur, you'll be hard pressed to see a consistent sanding pattern.

   The Rupes TA50 is a sander and a polisher!
Initially, Rupes recommended that the TA50 not be used as a polisher. Marco the engineer claimed, "The gears are not built for it!" Regardless, we were the first to go out on a limb, touting the TA50 as a polisher. Since then, we've sold untold amounts of TA50's, without reports of a single failure. Note: The TA50 is now listed on the Rupes website as a dual-purpose machine.

The TA50 is utterly capable of being used to polish small parts, door pillars, body trim pieces, headlights, engine parts (and on and on and on). To minimize absorption of the machine's random orbit-action, we recommend that you utilize very thin, lightweight buffing pads. We offer four varieties of pads, perfectly suited for use with the TA50. 

   What speed setting should be used for when sanding with the TA50?
In general, it is not necessary nor desirable to use vision-blurring speeds. This little dynamo tops out at whopping fifteen-thousand RPM, which is way too much speed for most situations. Luckily, the TA50 delivers an impressive amount of random backing plate rotation, even at very low speeds. If too much speed is used, you're certain to blow through untold quantites of sanding discs because the abrasive particles that accomplish all the work will break away from the disc.

To extend the life of the sanding disc (and deliver a superior sanding result), use a low rather than high operating speed. The ideal speed setting is one that allows the disc to travel smoothly across the sanding surface, all the while delivering at least some random rotation of the backing plate. If too little speed is used, the sanding disc will grab or grip the sanding surface. This will cause the machine to steer your hand in varying directions. Avoid this potentially damaging situation by initially using a low speed setting. Then, gradually adjust machine speed up, until the disc is gliding along smoothly.

Next, bump the machine speed up until there is at least some random rotation of the backing plate. In general, anywhere from a half turn to a few turns per second of the plate is sufficient. To gauge backing plate rotation, place a contrasting line or dot onto the edge of the backing plate. 

Warning: bad things can happen rapidly when using high operating speeds (15,000 RPM = 250 RPM per second),  so it's important to use only enough pressure to keep the disc or pad planted against the surface, and only enough machine speed to keep the backing plate rotating.  Excessive pressure will overstress the machine's gears & bearings, while too much speed will inevitably demolish sanding discs and buffing pads.

   Which sanding discs work best with the Rupes TA50?
Currently, no major manufacturer we know of produces a two-inch diameter sanding disc.
Luckily, it's relatively simple to make them yourself, using a typical arch punch.
07-21-2020 Note: We plan to offer 2" sanding discs in several varieties... soon!

   Add a spare backing plate.
Better to be safe than sorry! Having a spare backing plate on hand is always smart. The Rupes 9P01.046 2" Backing Plate is a direct replacement for the factory installed unit. This backing plate is not all that common in the USA... so plan ahead! (regularly $26.14, save 15%)

   Looking for a bigger air-powered random orbital polisher?  
Check out the Rupes BigFoot LHR75 3" Mini Random Orbital Polisher.

   Looking for an air-powered de-nibbing tool?
Check out the Rupes LD30 30mm Orbital De-Nibber.

Specifications & Notes:
Motor specifications:
Pneumatic, power rating not known

Speed settings:
Variable @ 0 R.P.M - 15,000 R.P.M.


Stroke size:
1.5mm offset, creates a 3mm orbit diameter


Machine type:
Random Orbital Polisher aka Dual Action

Action 1:
A bearing-mounted, free-spinning spindle that is placed 1.5mm off-center creates an orbit diameter of 3.0mm. A Velcro-face backing plate is screwed into the spindle.

Action 2:
The backing plate is able to free-spin (referred to as random) in either direction. The rate and velocity of said random rotation is affected by several entities, including (but not limited to) pad-to-paint friction load, applied pressure, and motor speed.


Backing plate: #9P01.046
2" (50mm) 6mm x 1.0mm mounting stud


Spindle mounting hole:
6mm x 1.0mm female thread


Air requirements:
Pressure:
bar 6 / 88 PSI approximate

Consumption:
330 liters / 87GPM / 11.7 CFM

Tool includes:
#9P03.060 In-line Air Regulator
#9P31.038 40" Air Inlet Hose (with fittings)
Dimensions:
Size: 6-5/8" L x 1-1/2" W x 2-3/4"H

Length is 8-1/2" with air regulator installed
Width is 2" with backing plate installed
Height is 3-1/8" with backing plate installed

Weight:
1 lb. 5 oz. approximate