OS80
The Unique Oversize
Grain Separator
Rubble Master OS80
OS80 – Oversize Grain Separator
The OS80 mobile oversize grain separator is the cost-effective solution for producing aggregate material in a single pass with only one loader. The feed material is crushed inside the RM80 at maximum throughout and with minimum wear. The OS80 is fitted to the crusher’s main discharge belt using quick-release levers, maintaining unrestricted movement of the crusher around the site. Three comb cascades reliably separate the material into the defined grain size. The refeeding belt provides a closed-circuit system.
- Defined final grain size achieved in single screening
- 100% separation of oversized grains using 3 comb cascades
- Straightforward and cost-effective solution for obtaining graded material
- Reduced fine grain content since it never reaches the crusher
- Maximum production capacity with low wear
- Comb cascades can be adjusted to each application
- High discharge level — 9 ft 5 in (2.85 m for fine particles)
- Power supplied from the crusher generator
- Production capacity of 168 tons/hr (150 tonnes/hr)
- Screen range ¾ – 2 in (18–50 mm), resulting in grain size of 0/20 to 0/50
- Quicker return on investment that with stand-alone screens
Graded material in a single pass: 3 comb cascades ensure strict separation into ¾" minus, 1" minus, 1½" minus or 2" minus.
Oversized conveyor produces second material gradation or feeds material to Re-Feed Belt (RFB) for closed-circuit crushing efficiency.
Oversized Re-Feed Belt (RFB) completes a closed-circuit, maximizing crushing efficiency.
OS80 – Specifications
Technical Data for Rubble Master OS80 — Oversize Grain Separator
| Total Weight: | 1,543 lbs (700 kg) | |
|
3 Comb Cascades with a screen length of 39.4 in (1000 mm) and a width of 15.75 in (400 mm) Screened grain size from 0.75–2 in (20–50 mm) The oversize material separator is suspended from the end of the discharge conveyor belt |
||
| Main Dimensions: |
Length Width Height |
8 ft 7 in (2600 mm) 3 ft 9 in (1120 mm) 5 ft (1510 mm) |
|
Discharge Belt for Screened Material: |
Belt Width Length Discharge Height |
32 in (800 mm) 7 ft 7 in (2300 mm) 9 ft 5 in (2850 mm) RM80 |
|
Discharge Belt for Screened Material: |
Belt Width Length Discharge Height |
14 in (350 mm) 6 ft 7 in (2000 mm) 6 ft 3 in (1890 mm) RM80 |
| Comb Cascade Mesh Size | Fingers | |
| 1-¼ in (32 mm) — Standard | ø 3/8 in (10 mm) | |
| 1-5/8 in (42 mm) | ø 3/8 in (10 mm) | |
| 2-3/8 in (60 mm) | ø 3/8 in (10 mm) | |
| Adjustable from 1-1/8, 1-9/16 to 2-3/8 in (28, 40 to 60 mm) | ø 3/8 in (10 mm) | |
| Adjustable from 5/8, 1-1/8, 1-9/16 to 2-½ in (16, 28, 40 to 64 mm) | ø 3/8 in (10 mm) | |
| 1-¼ in (32 mm) | ø 5/16 in (8 mm) | |
| 7/8 in (22 mm) | ø 5/16 in (8 mm) | |
| Specifications subject to change in line with technical developments. | ||