Resin Binder Dosing Systems

High Precision Binder Dosing Systems for Foundry Core Room Operations

Klein offers two types of binder dosing systems for foundry sand coating applications: 

Mr. Bellows Binder Dosing

Using stainless steel bellows, this tried and trusted volumetric binder delivery system is the lowest maintenance system on the market, with almost no annual maintenance. The binder has no opportunity to contact air or gum up internal parts and the system is almost maintenance free. These binder dosing systems are trusted by major automotive companies around the world.


  • Stainless-Steel Bellows
  • Seals do not come in contact with binder
  • Operated using normal compressed air
  • Easily adjusted for various resin levels


  • Infinite adjustment models allow for analog input of any resin level to be selected
  • Guaranteed repeatable accuracy of +/- 0.5%
  • The bellows dosing design is absolutely maintenance-free
  • Dosing volume can be adjusted a number of ways:
    1. Infinitely adjustable screw
    2. Selection of 2 or 3 preset binder set points (Low and High)
    3. Infinitely adjustable dosing via analog input or PLC signal

Mr. Gear Binder Dosing

Geared pumps continuously circulate resin binders from one reservoir to one or multiple mixers. At each mixer destination, valves and flow control instruments control the precise flow of resins into each batch mixer. 


  • Two binder tanks
  • Two geared pumps
  • Two circulation pipelines to the mixer(s) and back to the tank
  • Two dosing units and flow controls at each mixer


  • Dosing volume can be infinitely adjusted
  • Easy to select different resin formulas for each product
  • Repeatable accuracy of +/- 0.5%
  • Compact design at each mixer location

Mr. Bellows – Two Part Resin Dosing System

Geared Pump and Reservoir