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| Type |
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| 'SPEEDCRAFTS' 3-wheeled Diesel Road Roller, Model DRR/10 (4 speed) & Model DRR-3/10 (3 speed), capacity 8/10 tonnes, generally conforming to IS : 5502 of 1988. |
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| Chassis & Frame |
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| Fabricated out of mild structural steel conforming to IS : 226/IS : 2062 Gr. A, electrically welded and all joints checked and tested to performance. Easy accessibility to all parts for overhaul and inspection is given utmost importance in design. |
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| Prime Mover |
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| Powered by Simpson S-4(I) / Kirloskar RB-33 water-cooled Diesel Engine with 12 volt electric starting system and an alternative hand start arrangement. |
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| Transmission |
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| The Clutch, Gearbox and Differential are integrated in a single unit. The clutch is of the heavy automotive double acting type, controlled by a single hand lever. A forward or backward movement of the lever gives a smooth and instantaneous corresponding direction of travel to the roller in any gear setting. The gears, pinions and shafts are housed in a mild steel fabricated gearbox and are manufactured out of special and recommended alloy steels. A differential locking arrangement is provided and is operated from the driver's seat. |
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| Lubrication |
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| Oil splash in gearbox and easily accessible grease nipples, cups and oiling holes. |
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| Rolls |
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| Fabricated out of mild steel plates conforming to IS: 226/IS : 2062 Gr. A and electrically welded and tested. |
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| Brakes |
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| Fully self-wrapping, external contracting type, fitted with replaceable brake linings and adjustable; controlled by a foot-pedal or hand-wheel independently. |
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| Steering |
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| Easily operated mechanical steering comprising of worm shaft and gear. It is designed to give jerk free movement to the front rolls. |
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| Front Roll Yoke |
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| Mild steel fabricated construction, with an efficient and strong built-in pivot, designed to withstand sudden jerks and loads. |
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| Scrapers |
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| Adjustable & reversible scrapers are fitted to cover the entire width of all rolls. |
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| Controls |
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| All controls are within easy reach of the operator from a comfortable driver's seat. |
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| Pressure Balancing Device |
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| A sliding weight in the chassis, operated by a handle, is provided to vary pressure on the front and rear rolls. |
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| Awning |
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| Made of steel sheets lined with hardboard and provided with side and end canvas curtains. |
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| Water Tank & Sprinklers |
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| A fixed pump is provided for feeding water into the water tank which leads to the sprinklers above each wheel controlled by a wheel valve. |
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| Towing |
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| A bird-mouth with draw-pin is bolted to the rear of the chassis for towing trailers etc. |
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| Tool Box |
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| Provided at the rear of the roller with a standard set of tools in a canvas tool-bag. |
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| Ballast |
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| Arrangement for ballasting the roller with either sand or water is provided in all the rolls. |
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| Warranty |
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| Our rollers carry a warranty against manufacturing defects for a period of twelve months or 1,000 working hours, whichever is earlier, from the date of sale. |
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| Optional |
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| Fully enclosed cabin, hydraulic steering, scarifier, cold-starting equipment, higher horsepower engine for high altitudes etc. may be provided at an extra cost. |
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| Technical Specification |
| Model |
DRR/10 (4 speed) & DRR-3/10 (3 speed) |
| Unballasted Weight |
8,000 Kg. |
| Water Ballasted Weight |
9,000 Kg |
| Sand Ballasted Weight |
10,000 Kg. |
| Engine S-4(I)/RB-33 |
41.5/37.5 BHP. at 1500 RPM. |
| Overall Length |
4880 mm. |
| Rolling Width |
1810 mm. |
| Overall Height |
2860 mm. |
| Dia. of Rear Rolls |
1370 mm. |
| Width of Rear Rolls |
535 mm. |
| Dia. of Front Rolls |
1030 mm. |
| Width of Front Rolls |
940 mm. |
Line Pressure
Minimum
Maximum |
Front Rolls Rear Rolls
27.6 Kg/cm 47.5Kg/cm
41.1 Kg/cm 61.7Kg/cm |
| Overlap of Rolls |
100 mm. |
| Wheel Base |
2800 mm. |
| Turning Radius |
3935 mm. |
| No. of Speeds |
Model DRR/10
Model DRR-3/10 |
4 forward and 4 reverse
3 forward and 3 reverse |
Speed
Model DRR/10
Model DRR-3/10 |
1.95 to 9.00 Km/hr.
1.74 to 7.47 Km/hr. |
| Gradient |
1 in 5 |
| Fuel Tank Capacity |
150 ltrs. (including spare tank) |
| Water Tank Capacity |
225 ltrs. (including spare tank) |
| Permissible Variation |
± 5% |
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