Challenge

Medalist 870 air-feed table model folder

The Challenge Medalist 870 is the 820/870 family variant with combination rubber and steel rollers. The manual describes roller caliper adjustment to help obtain clean folds on different paper stocks.

Manufacturing · Packaging · MACHINERY

MEDALIST 870

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Technical specifications

Brand	Challenge
Category	MACHINERY
Industry	Manufacturing · Packaging
Maximum sheet size	35.6 cm x 50.8 cm (14 in x 20 in)
Minimum sheet size	10.2 cm x 15.2 cm (4 in x 6 in)
Paper weight	34 g/m² to 176 g/m²
Number of fold plates	2
Fold plate No. 1 depth	5.1 cm to 43.2 cm (2 in to 17 in)
Fold plate No. 2 depth	5.1 cm to 22.9 cm (2 in to 9 in)
Fold roller diameter	3.8 cm (1.5 in)
Fold rollers	Combination rubber and steel
Roller adjustment	Roller calipers
Maximum speed	30,000 sheets/hour with 8.5 in x 11 in sheet
Overall dimensions	63.5 cm high x 156.2 cm long x 63.5 cm wide
Approximate net weight	124 kg (275 lb)
Standard motor	120 V, 60 Hz, 1 phase, 15 A; 20 A service
Optional motor	240 V, 50 Hz, 1 phase, 10 A; 15 A service

Written datasheet - Challenge Medalist 870

The Medalist 870 is a Challenge table-model folder in the MEDALIST 820/870 series. It shares the compact air-feed machine format, adjustable fold plates, stacker, and vacuum pump with the 820, but differs by using a combination rubber and steel roller set.

The machine is specified for sheets from 10.2 cm x 15.2 cm to 35.6 cm x 50.8 cm, paper weights from 34 g/m² to 176 g/m², and a stated maximum speed of 30,000 sheets per hour on 216 mm x 279 mm stock. The 870 configuration includes roller caliper adjustment, documented in the manual as a procedure specific to this model.

It is typically used in print finishing and document handling, such as folding brochures, letters, inserts, or printed jobs before packing or dispatch. For spare-part identification, Challenge sources recommend consulting the manual and using the machine model and serial number.