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Machines & equipment for sale

Pace Mark 4 Optical Sorter

Stock No
OS2CD Mark 4 Optical Sorter
Good Condition, Seen powered at RSW
Process Application
Optical sorting machine
Our Central Warehouse, Aldridge, UK
Weight (kgs)
External Dimensions (WxDxH mm)
2400 x 1200 x 1700


 PACE Sorting & Inspection Machine

The name PACE has for decades been associated with high speed automatic sorting and inspection machines. Pace build and support the full range of PACE sophisticated inspection machines incorporating high resolution cameras, feature analysis and material testing.

PACE machines find applications in high volume sorting and inspection of cylindrical multi-diameter components, headed components and especially threaded fasteners.

PACE machines are in use in the aerospace, defense, marine, automotive and general engineering sectors.

The basic PACE optical sorting machine will separate fastener type products by the following:

  • Shank diameter 
  • Shank length
  • Head diameter
  • Head height
  • Thread presence
  • Size or shape.
  • Overall length, diameter & thread presence & correctness.
  • Head profile inspection.
  • Crack detection.
  • Head recess inspection.
  • Hardness and material inspection.

By means of an extra attachment it is also possible to separate screws by difference in recess.The sorting rate is infinitely variable from 130 to 1300 parts per minute with a standard disc and 65 to 650 parts per minute with recess unit. A machine fitted with one CCD camera unit can also achieve these rates.

Counters are fitted to indicate the following totals:

Total number of parts seen by the machine, good part count, reject part count, reject part count, batch quantity and current batch quantity.

The standard optical screen resolution of 0.15mm.  i.e. parts can be separated if the difference between them is at least 0.15mm. 

Sorting Process;

The machine is designed for high speed inspection.  Parts are loaded into the bowl (manually or bulk loader), which then feed onto the upper rollers. 

 Oversized parts/foreign bodies are taken off down the overflow chute, other parts fall onto the vibratory chute and then the lower rollers, small parts/contamination fall through leaving correct parts to be fed onto the vibratory rails then into the disc for inspection.

In both indexing and continuous mode the parts are passed across the screen to be checked for, length, thread,diameter, or a combination of all three.  Indexing allows stations 1&2, or either to check for recess presence or full form and depth and or head height or diameter.

Stations 1&2 operate as the disc moves one slot dwells, allowing the station/s to drop and raise before continuing to the next slot.  Parts failing the test at this point are ejected into the 1st exit, good parts are ejected into the 2nd exit, parts failing on passing through the screen are ejected into the 3rd exit.

Inspections may be made on;

Shank diameters from 0.5 mm to 27 mm.
Shank lengths between 5 mm to 280 mm.
Speeds up to 2500 parts per hour.

 Machine training and service can be arranged upon request by a Qualified Pace Service Engineer


pdf icon Print / Download Pace Mark 4 Optical Sorter Datasheet

Additional files

Photographs taken prior refurbishment. Our refurbishment service is not available on all machines.