Choosing the Right Tapping Arm: A Guide to Pneumatic, Electric, and Hydraulic Arms

When it comes to choosing the right tapping arm, the decision depends on several factors, including the specific application requirements, production volume, and budget. Here are some key considerations to help you choose the right tapping arm for your needs.

Pneumatic tapping arms are powered by compressed air and are the most affordable option. They are best suited for smaller hole tapping ranging from 00 to 7/8″ but have enough power to handle tougher materials such as stainless steel and titanium. They are also ideal for applications where portability and ease of use are a priority. One downside to pneumatic tapping arms is that a clean, consistent air source is required. If you do not have clean shop air, an electric arm may be a better option.

Electric tapping arms are powered by an electric power pack plugged into your standard 110V outlet. These arms offer faster tapping speeds and a quieter operating noise than pneumatic tappers. The electric models can handle taps from 00 to 7/8″ and provide a maximum reach of up to 70″. Electric tapping arms are best suited for those wanting a fast, reliable tapping machine with minimal maintenance.

Hydraulic tapping arms are powered by hydraulic power packs, which require a 480V outlet. It provides the highest torque levels (up to 811 ft/lbs of torque, making it suitable for large and heavy-duty tapping operations. The hydraulic models can tap up to 2″, but due to the torque output, they are not the best at handling smaller tap sizes. We recommend nothing smaller than 1/4″. The downside to the hydraulic tapping arm is that it requires a heavy hydraulic power pack and is more expensive than its counterparts.

In conclusion, the type of tapping system you choose will depend on your specific needs and budget. Choose a pneumatic tapping arm if you want a lightweight, portable option for light-duty tapping. An electric tapping arm might be your best bet if speed and fewer maintenance requirements are important. For heavy-duty tapping, a hydraulic tapping arm is the right choice. If you are still trying to decide which tapping arm is best for you, contact us, or give us a call at 1-800-837-2503. Our FlexArm experts would be happy to help select the best option for you.

One response to “Choosing the Right Tapping Arm: A Guide to Pneumatic, Electric, and Hydraulic Arms”

  1. Toby Maier says:

    Hey there, I saw your booth at FABTECH and was interested in the FlexArm setup you had with the magdrill setup (S/N 032685). If you could reach out with a quote, I’d greatly appreciate it.

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Standard Features

  • Hand Pendant
  • 22″ Touch Screen Monitor
  • Omron FlexCNC Controller
  • Mobile Control Panel
  • Through Spindle Coolant 
  • Auto Tool Changer 
  • Flood Coolant
HP
Max RPM
FT/LBS
Series

18

4000

92

C-20-02 / C-10-02

18

6000

61

C-20-02 / C-10-02

33

12000

61

CM-20-02

Auto Stand-Off – This is currently defined to be surface stand-off and not to be confused with vector stand-off in 5-axis mode. The current auto stand-off is based on a changing surface and will adjust vertically based on the angle of the “A” Axis, so there is five (5) axis taken into account during the calculations, but this is not the same as the tool vector stand-off. There is the ability to do the vector stand-off change while the machine is running manually with buttons on the screen.

Z-Reader Probe – The Z-Reader is a device for mapping the location of the surface. It can be controlled manually & programmatically. The option is NOT active while cutting & is retracted out of harm’s way. It can be triggered to verify the surface at every pierce before the cutting process starts, or it could be used to drive surface mapping of the whole part before cutting starts. It begins with initialization or zeroing of the device to the surface at the beginning of a program and then accumulates or tracks the difference from that zeroing effort.

Automatic Edge Finder – The edge finder is or can be utilized manually (Jogging Method & Screen Buttons), programmatically (M & G codes), or fully automatic routine (dedicated program). This option sets offsets & program rotation to match the orientation & location on the cutting table.

AC Unit Installed on Electrical Cabinet – The unit is mounted on the cabinet’s High Power (480v) side. It is close to the location where the drives are mounted. This option keeps the cabinet temperature stable and allows heat dissipation faster. The servo drives for all axes are the most significant contributors to heat inside the electrical cabinet.

5-Axis Renishaw CalibrationThe calibration unit is a Renishaw model APCA45 with a modified spherical stylus. The device has a retractable cover and air purge to clear debris & dust during the activation process. It mounts to a swing arm controlled by a pneumatic rotary, so it is out of the way during regular operation and swings into the calibration position for calibration only. 

HP
Max RPM
FT/LBS
Series

18

4000

92

G-20-06 / G-10-06

18

6000

61

G-20-06 / -10-06

40

4000

217

GM-20-06 / G-20-06 / G-10-06

40

6000

145

G-20-06 / G-20-06 / G-10-06