Construction screening machine 870

mobilefor bulk materialscompact

Product overview
The Finlay® 870 tracked scalper is a compact, forward‑facing heavy‑duty screening unit designed for primary and secondary screening of aggregates, sand and gravel, topsoil, demolition and recycling where site space is limited.

Summary
Engineered for both large and small operators, the unit delivers high performance with a small footprint and simplified transport and operation. T‑Link telematics hardware and software with a seven‑year complimentary data subscription are fitted as standard.

Key features

• Two true screening decks 4.1 m x 1.22 m (13'6" x 4') providing a total screening area of 9.74 m² (105 ft²).
• Hydraulically adjustable screenbox angle between 14° and 18°.
• Aggressive screenbox accepts bofor bars, screenharps, woven mesh, punch plate and cascade fingers.
• Configurable for 2‑way or 3‑way split outputs.
• Hydraulically raisable screenbox discharge end for easy media access and change.

Hopper / Feeder

• Hopper capacity: 5 m³ with hydraulic folding hopper extensions.
• Feed height (rear): 3.4 m; feeder height (side): 4.1 m.
• Beltfeeder: 1.1 m wide x 3.4 m long; target area: 3.7 m x 2.2 m.
• Variable speed beltfeeder.

Fines conveyor

• Belt width: 800 mm; belt spec: 3‑ply.
• Working angle: 25°; Rosta scraper on head drum.
• Stockpile capacity: 88 m³.

Screenbox

• Top deck: 4.1 m x 1.22 m; bottom deck: 4.1 m x 1.22 m.
• Tensioning: top deck side tensioning; bottom deck end tensioning.
• Drive: hydraulic with heavy duty bearings; screen speed options: 1020 rpm (10 mm stroke) or 920 rpm (12 mm stroke).
• Screen angle hydraulically adjustable 14°–18°; total screening area 9.74 m².

Oversize conveyor

• Belt width: 1.05 m; belt spec: 3‑ply chevron.
• Working angle: 23° fixed; max belt speed up to 82 m/min.
• Impact bed full length; discharge height: 3.0 m; stockpile capacity: 40 m³ max.

Midgrade conveyor

• Belt width: 650 mm; belt spec: 3‑ply.
• Working angle: 25°; variable speed up to 102 m/min.
• Standard discharge height: 3.6 m; stockpile capacity: 69 m³.

Additional remarks
Designed for restricted‑space sites, the Finlay® 870 enables fast screen media changes and flexible media options to suit a wide range of materials and applications.

Technical specifications

• Model designation: Finlay® 870.
• Engine options: Tier 3: Caterpillar C4.4 83 hp (≈62 kW); Tier 4F: Caterpillar C3.4B 74 hp (≈55 kW); Stage V: Caterpillar C2.2 74 hp (≈55 kW).
• Total screening area: 9.74 m² (105 ft²).
• Operating weight: 20,750 kg (45,745 lbs).
• Transport dimensions (H x W x L): 3.1 m x 2.5 m x 11 m. Working dimensions (H x W x L): 3.2 m x 14 m x 12.5 m.
• Hopper capacity: 5 m³; fines conveyor stockpile: 88 m³; midgrade: 69 m³; oversize: 40 m³.
• Compatible screening media: bofor bars, screenharps, woven mesh, punch plate, cascade fingers.
• T‑Link telematics fitted as standard with seven‑year data subscription.