MS250 Stoper Drill
The MS250 stoper drill, equivalent to Boart Longyear S250, is made for miners who demand nothing but the best. This tool allows users to drill up whilst also enabling them to effortlessly control the drill and fine-tune it using minimal effort. One of this tool’s best features was its massive contact areas between major cylinder components, which in turn reduced crushing pressure while simultaneously prolonging the life of the product.
Stoper Drill With Leg
Available Sizes:
| Size : | 31 in | 34 in | 24 in |
| Ordering Part No. : | 5111 148 000 | 5111 148 000 50 | 5111 148 000 51 |
| Weight W/ Leg : | 45.8kg | 49 kg | 42 kg |
| Feed Leg Stroke : | 787 mm | 864 mm | 610 mm |
| Length Retracted : | 1635 mm | 1750 mm | 1495 mm |
| Length Extracted : | 2422 mm | 2614 mm | 2105 mm |
Technical Specifications:
| Chuck Size : | 22×108 mm |
| Air consumption@ 6 Bar : | 83 l/s |
| Piston diameter : | 79.4 mm |
| Stroke length : | 67.7 mm |
| Air Hose Connection : | 25 mm |
| Water Connection : | 13 mm |
| Torque : | 29-35 kgf-m at 620 kPa |
| Impact rate : | 2300 BPM |
Key Features
- Balanced weight distribution for easy operator control
- Ergonomic controls for operator, with push button stoper leg
retraction and motorcycle control feed - High penetration rate
- High torque
- Convenient operating controls
- Long life
- Comes with a locking steel puller
- Market leader in North & South American continents
Our Certifications
FAQ’s
The MS250 is available in three feed leg stroke sizes: 24 in, 31 in, and 34 in, each with different corresponding weight and length specifications.
With the leg attached, the MS250 weighs approximately 42 kg (93 lb) for the 24 in version, 45.8 kg (101 lb) for the 31 in version, and 49 kg (108 lb) for the 34 in version.
Torque output is 29–35 kgf-m at 620 kPa (210–250 lbf-ft at 90 psi).
The piston diameter is 79.4 mm (3.125 in), with a stroke length of 67.7 mm (2.625 in).
It uses a 25 mm (1 in) air hose connection and a 13 mm (1/2 in) water connection.
- Balanced weight distribution for easy operator control
- Ergonomic controls, including push-button stoper leg retraction and motorcycle-style feed control
- High penetration rate and high torque
- Long service life, thanks to large contact areas between major cylinder components (which reduces crushing pressure)
- Comes with a locking steel puller
- Widely used across North and South America
Yes, Mindrill holds CE, ISO 9001:2015, ISO 45001:2015, and ISO 14001:2015 certifications.
You can request a quote directly on the product page by filling out the enquiry form, or contact Mindrill via email (salessupport@mindrill.com) or phone/WhatsApp (+91 98305 94274).
Yes, a downloadable flyer/spec sheet is available on the product page (also offered in English, Spanish, and Russian).
Related Mindrill products include the MJ250 (jackleg drill), MJ83, MST250 (stoper drill), S215, S25, and pusher legs like the A755, M610, and M630.
Related Products
| Weight : | 34.3 kg |
| Air consumption @6 Bar : | 83 l/s |
| Stroke length : | 67.7 mm |
| Air Hose Connection : | 25 mm |
| Impact rate : | 2300 BPM |
MJ250
| Weight : | 32.4 kg |
| Length without Leg : | 688 mm |
| Piston diameter : | 76 mm |
| Water Connection : | 13 mm |
| Impact rate : | 2256 BPM |
MJ83
| Weight : | 22.6 kg |
| Stroke : | 55 mm |
| Length incl.: | 730 mm |
| Air Consumption : | 116.5 @ 500 kPA |
| Impact Rate : | 2175 @ 500 kPA |
S215
| Weight : | 31 kg |
| Stroke : | 70 mm |
| Length incl.: | 760 mm |
| Air Consumption : | 145 @ 500 kPA |
| Impact Rate : | 2000 @ 500 kPA |
S25
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