S140 Rear Drive Drifter

Engineered for maximum impact, the S140 is a heavy-duty, high-output pneumatic rock drill built to dominate the toughest drilling environments. With its colossal 140 mm (5.5”) piston—the largest in its class—it redefines industry benchmarks for raw power and reliability. From quarry benching and open-pit blast hole drilling to shaft sinking on Jumbo rigs and underground development, the S140 delivers exceptional penetration rates while minimizing downtime. Its service-friendly design ensures fast maintenance, keeping productivity high and operations running smoothly.

Engineered for maximum impact and built to thrive in the harshest drilling environments, the S140 is a heavy-duty, high-output pneumatic rock drill designed to deliver unmatched performance in demanding mining and construction applications. At its core is a colossal 140 mm (5.5″) piston—the largest in its class—setting a new industry benchmark for raw power, penetration speed, and durability. Whether deployed in quarry benching, open-pit blast hole drilling, shaft sinking on jumbo rigs, or rigorous underground development, the S140 consistently provides superior drilling efficiency while minimizing operational downtime. Its service-friendly construction supports fast, straightforward maintenance, ensuring high productivity and prolonged tool lifespan even under continuous heavy-duty use.

Complementing this robust powerplant is a precision-engineered stainless steel water box, equipped with an external water feed that seamlessly supports both air and water flushing operations. Widely spaced bearings stabilize the shank adaptor, ensuring accurate piston alignment for efficient shock-wave transmission and extended service life of critical impact components. This structural stability enhances drilling consistency and reduces wear, especially in applications requiring sustained high-impact energy.

The system excels across a broad range of drilling conditions, capable of drilling 52–115 mm diameter holes at depths reaching 20 m or more, making it equally effective in surface drilling using air flushing and underground operations relying on water flushing. A heavy-duty chuck jaw and five-spline shank further reinforce the system’s ruggedness, while live air lubrication minimizes friction and prolongs the life of key internal components.

Designed with both practicality and operator safety in mind, the drifter incorporates a fully muffled cylinder and resilient silencer to reduce noise output, enhancing workplace comfort and productivity. The rear-mounted rotation motor reduces overall height for improved manoeuvrability in confined environments and allows the air motor to be removed without disassembling other machine components. Four robust side rods provide secure clamping and can be easily withdrawn even with the machine fully assembled, simplifying service procedures.

Routine maintenance is exceptionally straightforward, following a simple strip–inspect–replace–rebuild process that can be executed by trained personnel with minimal downtime. With proper feed force and lubrication, the combined S140 system delivers an economical, reliable, and long-lasting service life—making it a top choice for operators seeking maximum impact performance, versatility, and efficiency in modern drilling operations.

Power and Durability Built with a stainless steel water box and widely spaced bearings that provide exceptional stability to the shank adaptor, ensuring accurate piston alignment and optimal shock-wave transfer. Heavy-duty chuck jaws and a five-spline shank minimize wear on impact components, while the fully muffled cylinder and resilient silencer support long-lasting, reliable performance.
Efficiency and Control Designed for versatile drilling, handling hole diameters from 52–115 mm and depths of 20 m or more in both surface (air flushing) and underground (water flushing) environments. The compact, rear-mounted rotation motor enhances manoeuvrability, and live air lubrication boosts efficiency while maintaining consistent component protection.
Operational Safety and Maintenance Offers simple, streamlined maintenance through a strip–inspect–replace–rebuild approach manageable by trained personnel. The air motor can be removed without dismantling other components, and four easily withdrawable side rods ensure secure clamping. Quiet operation from the muffled system promotes safer, more productive working conditions.

 

Desc Metric Imperial
Stroke 59mm 2.32 inch
Bore 140mm 5.5 inch
Length (without shank) 1030mm 40.55 inch
Mass 180kg 397lb
Blows per minute
Rotation Motor 4.0 Kw @ 120 RPM—5 bar 236 ft lbs @ 73 psi
Nominal Diameter 52 - 115 mm 2 - 4.5 inch
Reamed Diameter up to 152 mm up to 6 inch
Drilling Dept Capacity up to 46 m up to 150 ft
Air Consumption 212 L/sec @ 7 bar 450 cfm @ 100 psi
Water Requirements 37 L/min @ 5 bar max. 10 gpm @ 70 psi max.
Air Connection -Hammer 40mm 1.5 in
Air Connection -Rotation 25mm 1.0 in
Water Connection - 20mm 0.75 in
Water Requirements 37 L/min @ 5 bar max. 10 gpm @ 70 psi max
Shank Size Male 45 mm Five Spline Shank

 

No Part No Description QTY
1C3218Locating Sleeve2
2D2028Washer5
3C3228Bolt2
4D2154Washer1
5149-12,2MTWasher1
6C7717Bolt1
7112-M6-8Set Screw1
8164-7313O Ring2
9C2747Adaptor2
10109-M6-8Cap Screw3
11149-6,2MTWasher3
12C7716Bolt3
13149-16,3MTWasher5
14A1843Back Plate Air Motor1
15276-6161SCNBearing4
16A1841Air Motor Housing1
17B2645Rotor - Keyed1
18B2646Rotor1
19276-6161SBearing2
20C3221Bearing Spacer1
21A4577End Plate1
22B2651Drive Pinion1
23235-04-3-16Key1
24B2649Compound Gear1
25B2650Reduction Gear1
26109-M8-20Screw8
27C3039Inlet Fitting1
28B2455Air Stem Inlet1
29164-741O Ring1
30B6775Air Stem Nut1
31165-M-45PPDowty Washer1
32276-6181SCNBearing2
33B6218Drive Shaft1
34375-M12-18HELICOIL Insert1
35375-M16-24HELICOIL Metric6
36C7713Pad1
37109-M16-35Socket Screw1
38B6225Side Rod4
39E2202Backhead1
40D7936O Ring1
41C8364SLube Inlet1
42165-D-54PPDowty Washer1
43C7747Lube Tube1
No Part No Description QTY
44C7748Seal1
45C7751Nut1
46D7937Flat Washer1
47C7531Drive Gear1
48C7731Woodruff Key1
49B6320Valve Plug1
50C7703Valve1
51B3805Valve Chest1
52D3419Locating Pin1
53C5767Valve Plate1
54B6221Piston1
55C4373Liner1
56D3102Nylon Plug2
57E3130Cylinder1
58300-M10-25Selloc Pin1
59C4388Thrust Pad1
60C7425Bronze Liner1
61B6204Bronze Bush1
62C7423Chuck Bush1
63300-M12-32Selloc Pin1
64A4496Chuck1
65E2206Rear Housing1
66C7411Bearing Disc1
67E2256Muffle1
68242-12PBlanking Plug2
69242-4PBlanking Plug2
70D8307Key1
71E2175Water Box1
72C7625Front Bearing2
73312-168000043LLip Seal3
74312-389064624LO Ring3
75HD-J83019LSleeve1
76D8310O Ring1
77C8946Long Cover Nut6
78C7732Water Box Stud2
79375-M20-30HELICOIL Insert2
80260-04PGrease Nipple1
81B6279Front Insert1
82109-M6-50Socket Screw6
83C7629DX Bush1
84E2111Front Head1
85109-M10-25Screw1
86A4494Chuck Jaw1

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