By Pete Amata

OTP Industrial Solutions supplies highly engineered pneumatic components for all types of industrial projects in industries such as automotive, food and beverage and OEM (original equipment manufacturing).

The basic goal of any machine design is to require that the machine work at its peak performance with precision and consistency. Speed controllers are an important part of this design. Speed controllers, or flow controls as they are also known, are a compact engineered component that normally provides “free flow” of air in one direction and “metered” air flow in the opposite direction. The “metered flow” is accomplished by using a check valve circuit to divert the fluid flow through a needle valve which can increase or decrease the rate of fluid as required. Speed controllers should be mounted directly to the actuator for immediate quick control of the actuator.

An essential rule of thumb in Fluid Power is, “when in doubt, meter out.” This phrase means that if you do not know the complete application circuit but need to control it, do it by regulating the fluid flow out of the actuator. This process will provide control by using the back pressure developed in the circuit to synchronize the speed and performance of the actuator so it does the work as required and under control. Whether you are talking about pneumatics or hydraulics, the principle is the same.

Vertical applications are known for being difficult to control. In a vertical application, the weight of the load can cause the cylinder to extend faster than the fluid is being directed to the cylinder; this causes erratic actuation with little or no force. The cylinder may also jerk at different times as the fluid catches up to the cylinder causing unstable performance. SMC speed controllers have a pilot operated design to solve this problem, plus the design provides a backup to the circuit in case the air pressure is lost in the system. A pilot operated speed controller will retain the air in the cylinder until a pilot signal is sent, lifting up the check valve and allowing the flow of the captive air out of the actuator.


  • Newly developed dial display units provide feedback per a specific number
  • Ten turns of control as a standard with the same percentage of change per rotation
  • More body sizes, metric and imperial threads and multiple locking options on adjustment
  • Mostly designed for one-touch tube connections for easy installation
  • Residual pressure release, if needed


  • Pilot operated unit—pilot signal required to open flow control
  • Dual flow unit—offers control in both directions
  • Tamper proof unit—designed stop adjustments in the field by operators
  • Quick exhaust unit—quickly exhaust return flow for faster operation
  • Manifold mounting—DIN rail and “L” bracket mounting of multiple units
  • Energy saving unit—combination pressure circuits reduce energy usage
  • Low speed control unit—better resolution on low speed applications
  • Clean room/corrosive resistant units—meets specific design needs

OTP’s team of certified fluid power pneumatic specialists and experts have the knowledge, training and experience to help assist you in your fluid power requirements.


By Bill Tobias

Many factors go into making the correct decision when selecting a new gear reducer. We must begin with the following basic information to accurately make the correct selection.


  • Speed—how fast does the application require the output shaft to turn?
  • Torque—what is the torque load requirement?
  • Overhung load—how external radial loads are applied to the output shaft may require more gear load capacity, and therefore, larger gears.
  • Duty cycle—how long will the gearbox operate before turning off? Depending on life requirements, intermittent duty applications can utilize smaller gearboxes.


  • Weight, temperature and environment
  • Special coatings or enclosures for harsh or food and beverage applications
  • The correct mounting position so the unit receives proper lubrication
  • Calculations for correct horsepower requirements

A failure we routinely see is the use of a reducer with a c-face direct mounted motor in reversing applications, these failures can usually be solved by simply changing it to a c-face coupled motor instead. Making the correct selections in the beginning will help assure long life and reliable performance.

OTP can assist you through the sizing process to ensure the correct selection of reducer or gear motor for your specific application. Plus, we can advise you on all the latest product advancements and the newer high efficiency product offerings, such as the Sumitomo Hyponic or Grove LeCentric. Contact us to receive the expert Technical Knowledge and Broad Product Support that only comes from OTP Industrial Solutions.

OTP 2013 Annual Open House/Tailgate

OTP Industrial Solutions Celebrates 50 Years!

2013 Annual Open House/Tailgate
Friday, September 27th beginning at 11 a.m.
at 1900 Jetway Blvd., Columbus OH 43219

Photo of past OTP Tailgate Party

Please join OTP in celebrating our 50th anniversary. We will have our Annual Open House/Tailgate on Friday, September 27th beginning at 11:00 a.m. and going until food and prizes are gone (est. 3:00 p.m.).

Banner of The Ohio State University

30+ Vendors, Great Food, Games and Prizes

We will once again be joined by over 30 vendors with product information for you. There will be great food, games, and many prizes to be won! Please send your RSVP to your account manager or Sara Mathisen. We look forward to seeing you there!

Supported by our suppliers:

  • AC Tech
  • AEP-Kema
  • Atlas Copco
  • Bonfiglioli
  • Danfoss
  • Eaton
  • Emotron
  • EPT
  • Exel
  • Flowserve
  • Flowserve Seal
  • GPM
  • Graco
  • Grundfos
  • Hub City
  • Leeson/Grove
  • Martin Sprocket&Gear
  • NSK
  • NTN
  • Omron
  • Rexnord
  • PBC Linear
  • Rittal
  • SMC
  • Sumitomo
  • Thomson
  • Transair
  • 80/20
  • UST
  • Vogelsang Pumps
  • Warner/Boston/TB Woods
  • Yates