MPI 10”x20” 90N Holding Force Electromagnet Longitudinal Pole Surface Grinding Chuck EMLP-250500-SCG

Description

The MPI Electromagnet Longitudinal Fine Pole Surface Grinding Chuck is intended for clamping of one or more ferromagnetic workpieces on surface grinding machines during dry or wet (with cooling liquid) grinding. This chuck is extremely versatile for both grinding and EDM operations.

Its variable holding power allows you to hold the workpiece accurately, so that there is just enough force to hold the workpiece in place. The magnetic surface pattern allows for simple and inexpensive tooling designs to hold different shaped workpieces. It simplifies complicated set ups with accurate repeatability.

Electromagnet Longitudinal Pole Surface Grinding Chucks consist of long, narrow steel strips running lengthwise. These are called ‘poles’. Workpiece(s) must cross these poles to contact North and South poles and close the magnetic circuit. This ensures a proper magnetization of your workpiece(s) and thus a good holding force. It is not always obvious to identify North and South poles, therefore it is recommended to cross as many steel strips as reasonably possible.

Narrow workpieces placed parallel to the poles and touching only one pole will not be clamped adequately. If the shape and/or size of your workpiece(s) does not allow for a proper contact you may have to use auxiliary laminated blocks. The bigger the contact area, the higher the holding force. Also, the thicker the workpiece, the more magnetic flux it can absorb the more holding force will be generated. Magnetic force lines flow from North to South poles through the workpiece. They do not like to flow through air or nonmagnetic materials.

Poor surface conditions like a rough surface, rusty surface, or uneven surface will create an airgap thus reducing the holding force. Flat, smooth, and clean workpieces will achieve the highest holding force. Therefore, deburr workpieces and file chock marks if necessary. Always keep the chuck’s clamping surface clean and redress if the surface is scratched badly or damaged.

The Electromagnetic Longitudinal Fine Pole Surface Grinding Chuck is used for efficient clamping of very small workpieces during precise surface grinding. It is an electromagnetic chuck which is provides holding force over the entire surface of the top plate. With minimum warming of the working area, you will obtain a unique workpiece clamp for precise grinding.

Efficient production is supported by easy operation using the control unit - just press the button or turn the switch to regulate the holding force for ideal conditions in industrial operation. This unit also allows automatic demagnetization so that no residual magnetism remains in the workpiece after unclamping.

Features

• Design with firmly embedded coils
• Waterproof design
• Electromagnet is easily operated by pressing the button on the control unit which also ensures variable adjustment of the force to create the optimum conditions for clamping
• Suitable for sinker EDM applications
• Magnetic field does not affect EDM operation
• Powerful holding over entire chuck surface
• Fine pole divisions – for more uniform magnetic holding of small parts
• Low height for added clearance on larger workpieces
• Poles: Parallel
• 2 Hold down clamps included

Specifications

• Chuck Size: 10” x 20”
• Holding force: 90N/cm² / 130lbs/in²
• Min Workpiece Size: 25mm x 25mm x 3mm / 1” x 1” x 0.12”
• Regrinding limit: 6mm / 0.236”
• Pole distance: T4mm – 3mm+1mm / T .160” – .12”+.04” (steel/brass)
• AMPS: 1.49
• OHMS: 77
• Volt Input: 110
• Watts: 172
• Dimensions: 10” x 20” x 2.8”
• Weight: 180 lbs.

Note: Control Unit sold separately