Random Orbit Sander features a stronger performance with a 22% increase. Porter-Cable. PORTER-CABLE® 7346 variable-speed random-orbit sander features a 4.5 Amp, AC motor with electronic variable-speed dial generates 2,500-6,800 orbits per minute, producing swirl-free sanding action. … With that said, the Bosch ROS20VSC significantly outperforms the PORTER-CABLE 7346SP with its 12,000 OPM (the top speed of the Porter-Cable sander is 6,800 OPM, but it can go as low as 2,500 OPM). Other features include, pad … Porter-Cable has the stronger 4.5-amp motor. Write a review. However, Bosch has a 2.5-amp motor. Porter-Cable 7346 6 in. Average Rating: (5.0) stars out of 5 stars 2 ratings, based on 2 reviews. The 7346's stronger 4.5 Amp motor allows for higher overload protection. Or, if you’re lucky enough to be reading this in October, 2009, you can win the sander … The sander packs 4.5 amps of power, giving it plenty of juice for typical sanding applications. 3) PORTER-CABLE 382 5-Inch Random Orbit Sander You can find the Porter-Cable 7346 6-Inch Random Orbit Sander for a little over $170 at Amazon. Porter-Cable PORTER CABLE 7346 6-Inch Variable-Speed Random Orbit Sander. PORTER-CABLE 7346SP Random Orbit Sander with Polishing Pad The speed settings cover a wide range from to slow to warp speed. This sander is made … Has a dial so you can set your speed and increase if you want just …