What do I need to do to choose a Tapping Machine?
- Lindsay Eilerman
- Aug 28, 2015
- 2 min read
You made the decision that it’s time to buy and there’s one big question…
How do I choose a tapping machine?
You want to make your production operation more efficient. You know FlexArm offers the highest quality tapping arms available. You look at the options and your application and ask yourself:
What’s the difference between tapping machines?
What do I need to know to make the right choice?
A FlexArm hydraulic tapping machine can tap up to 2″ and uses 3-phase power. A FlexArm pneumatic tapping machine can tap up to 7/8″ and is air-powered. We’ll focus on how to choose a pneumatic tapping system because it will support a wide variety of everyday applications:

How do I choose a tapping machine?
Consider the majority of your tapping applications. The answers to these 3 questions will steer you in the right direction for a tapping solution:
1. What is the largest size tap to be used?
2. What material is being tapped?
3. How large is the piece being tapped?
The main difference between FlexArm pneumatic tapping systems is working range (reach) and tap capacity. Each arm is constructed to accommodate a specific reach. Different applications, parts being tapped and work spaces can be accommodated using the following chart:

FlexArm offers a variety of motor options for tapping applications. Here’s a quick break down:
The majority of FlexArm pneumatic tapping arms can use different motors to achieve needed tap capacity. Combine the motor needed for tap capacity with the arm for the reach needed for the best solution for your tapping application.
One more time…
The main difference between tapping systems is working range (reach) and tap capacity.
The RNR-20 is FlexArm’s solution to tapping a wide variety of sizes from #6-7/8″. The 2 speed gearbox allows an easy change from a lower rpm speed (100 or 200 RPM) to a higher RPM (400 or 700 RPM). This offers unsurpassed tapping flexibility. We also have a larger range of hydraulic tapping arms, you can read more about those here.
Hopefully this answers a lot of questions when it’s time to purchase that new tapping machine. The best part is that you aren’t alone – the friendly team of FlexArm professionals is ready to help with the best solution for any tapping application.
Contact us online or call today: 1-800-837-2508. When it’s time to choose: choose FlexArm.