The Unique Oversize Grain Separator
The Rubble Master OS100GO! mobile oversized grain separator: the cost-effective solution for graded materials. Only one loader is needed for the RM100GO! to crush feed material at maximum throughput with minimum wear in a single pass. The OS100GO! is easily fitter to the crusher’s discharge belt using quick-release levers, maintaining unrestricted movement of the crusher around the site. Four comb cascades reliably screen the material to the defined grain size. The refeeding belt provides a closed-circuit system.
Rubble Master OS100GO! — CE-Certified Grain Achieved in a Single Pass

Together, the RM100GO! crusher and OS100GO! over-sized grain screen form a mobile system to produce CE-certified cubic final grain to a standardized size — at the highest throughput and with low wear to the machinery. The OS100GO! is fitted to the crusher’s discharge belt using quick-release levers, ensuring unrestricted mobility of the crusher around the job site. Four comb cascades reliably grade the material to the defined grain size with the return conveyor belt providing a closed circuit system. Both machines are transported with just one low-loader and are ready for operation within 20 minutes of arrival on site. Power is supplied from the crusher generator.
- Defined final grain size achieved in single screening
- 100% separation of oversized grains using 3+1 comb cascades
- Straightforward and cost-effective solution for obtaining graded material
- Reduced fine grain content since it never reaches the crusher
- Comb cascades can be adjusted to each application
- High discharge level — 9 ft 1 in (2.77 m for fine particles)
- Power supplied from the crusher generator
- Production capacity of 200 tons/hr (220 tonnes/hr)
- Screen range 7/8 – 2-3/8 in (22–60 mm), resulting in grain size of 0/24 to 0/60
- Quicker return on investment that with stand-alone screens

Comb cascades

Oversized conveyor

Re-Feed Belt (RFB)

Low costs for high-profit: single pass, maximum throughput, minimum wear

Excellent grain quality for demanding applications: screen lines approved by standards institutes

Unrestricted mobility: on-site for RM crusher mounted on crawler gear plus oversized grain system
Dimensions
Show in millimeters (mm). Specifications subject to change in line with technical developments.

Technical Specifications
Specifications subject to change in line with technical developments.
Rubble Master OS100GO! | ||
Total Weight | 2,425 lbs (1100 kg) | |
4 Comb Cascades |
With a screen length of 3.7 ft (1150 mm) and a width of 15.75 in (400 mm) Screened grain size from 15/16 — 2-3/8 in (24–60 mm) The oversize material separator is suspended from the end of the discharge conveyor belt |
|
Main Dimensions |
Length Width Height |
12 ft 3 in (3734 mm) 7 ft 6 in (2267 mm) 5 ft 9 in (1750 mm) |
Discharge Belt for Screened Material |
Belt Width Length Discharge Height |
48 in (1200 mm) 9 ft 11 in (3000 mm) 9 ft 1 in (2770 mm) |
Discharge Belt for Screened Material |
Belt Width Length Discharge Height |
20 in (500 mm) 6 ft 7 in (2000 mm) 6 ft (1820 mm) |
Comb Cascade Mesh Size | Fingers | |
7/8 in (22 mm) — Standard | ø 3/8 in (10 mm) | |
1-¼ in (32 mm) | 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) | |
Oversized cascade | ||
1-9/16 in (40 mm) | ø 9/16 in (15 mm) |