S250 Pneumatic Air Leg Rock Drill for Mining | SHENLI

Wet Drilling for Underground Development and Tunneling

The SHENLI S250 is a pneumatic jackleg drill for wet drilling in medium-hard and hard rock. It is suited to horizontal and inclined blast-hole work where the operator positions the drill with a supporting air leg.

Rear-mounted controls, an adjustable throttle and serviceable front-end components are central to its design. For a mine evaluating the S250, these details deserve as much attention as the specification table: they influence how the operator handles the equipment and how the workshop approaches maintenance.

SHENLI manufactures the drill and related parts, with complete machines and maintenance components available directly from the factory.

33.5 kg drill weight · 22 × 108 mm hex shank · 2,300 blows/min

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Control at the Rear of the Drill

When starting a hole, the operator needs to coordinate drill position, throttle and leg feed.

The S250 places its operating controls at the rear of the drill. Its multi-position throttle allows a progressive start, while the pusher-leg controls include push-button retraction.

These functions are relevant at different points in the drilling cycle:

For buyers comparing equipment remotely, request close-up photographs or a video showing the controls on the quoted drill-and-leg set. This gives operators a clearer reference than an overall machine photograph.

Wet Drilling: Include the Water Circuit in the Setup

The S250 is intended for wet drilling. Water delivery therefore needs to be considered alongside the air supply and drilling tools.

Before putting the equipment into service, confirm the water connection, suitable drill steel and the flushing arrangement for the selected configuration. A wet-drilling setup needs to deliver water through the intended route throughout the work.

The listed water connection is 13 mm. Check the actual coupling details when preparing hoses and fittings for the mine.

Wet drilling forms part of the site’s dust-control arrangements. Ventilation, protective equipment and operating procedures remain part of the mine’s overall controls.

A Front End With Maintenance in Mind

The drill’s front end is where the machine interfaces with the drill steel. It is also an area the workshop needs to inspect during servicing.

The S250 design includes a removable bushing intended to protect the front head from wear. The retaining arrangement holds the drill steel in position, while forged alloy-steel components form part of the machine’s construction.

For maintenance planning, focus on identifying the components fitted to the actual machine:

• Front-head bushing
• Drill steel retaining components
• Associated fasteners and seals
• Other wear components identified in the matching parts drawing

Request the corresponding drawing when ordering. A clear illustration helps the mechanic locate a component and helps the buyer order the correct replacement.

[Request the S250 Parts Drawing]

Match the Drill Steel at the Interface

The specified S250 drill steel interface is 22 × 108 mm hex.

This dimension is the starting point for checking drill steel fit. It does not, by itself, confirm that every rod and bit in an existing warehouse will suit the intended work.

Also identify the rod length, bit connection and planned hole dimensions. If retaining existing drilling tools, provide measured shank dimensions and photographs before confirming the order.

Keep the distinction clear in the quotation:

Drill interface → Drill steel → Bit connection → Selected bit

Each connection needs to correspond to the next component. Naming every item helps prevent a drill, rod and bit from being ordered as separate items that do not form a usable set.

S250 Technical Specifications

Air consumption is listed at 6 bar. Review compressor suitability using the delivered air capacity, line conditions and total demand of the equipment operating together.

Actual drilling results depend on rock conditions, air and water delivery, drill steel, bit condition and operation. Confirm the supplied configuration in the final technical sheet.

Choose the Configuration Your Crew Will Receive

An S250 quotation should identify the actual assembly being supplied. A photograph of one version should not be used to assume the equipment included with another.

Anti-vibration handles and noise-reduction mufflers are configuration options to discuss. Their availability and inclusion should be confirmed in the quotation.

If you are purchasing a replacement drill only, state whether the existing leg and accessories will be retained. Their fit should be checked before shipment.

Factory Supply That Extends to the Parts Inside

SHENLI produces rock drills and pneumatic breakers, together with related components.

For an S250 owner, direct factory contact provides a route to discuss both the complete drill and the parts identified during maintenance. Send the machine reference, component number and photographs when making a parts inquiry.

For the initial order, a selected set of maintenance parts can be quoted alongside the equipment. For later orders, keep the approved parts list with the machine records so that purchasing and maintenance use the same references.

Confirm stock and preparation time for the specific items required.

S250 Questions Before Ordering

Does the quoted price include the air leg?

The supply scope depends on the quotation. Ask for the drill and air leg to be identified separately, including the selected leg model and any connecting components.

Are the anti-vibration handle and muffler standard?

Do not assume they are included. Specify the required arrangement and request confirmation of the available configuration.

Is the removable front bushing available as a spare part?

Request the part number and availability for the bushing fitted to the quoted machine. Match it to the corresponding parts drawing before ordering.

Can we use parts from another S250-type drill?

The model name alone does not establish interchangeability. Compare the individual part numbers, dimensions and assembly details before combining stocks.

What is needed to review our existing drill steel?

Send photographs of the shank, measured dimensions, rod length and bit connection. Include the hole diameter and depth you intend to drill.

Get a Quotation for the S250 You Need

Send your required quantity and tell us whether you need a replacement drill, a drill-and-leg set, or a package with drilling tools and maintenance parts.

If you have an existing machine, photographs of its controls, air leg and drill steel will help make the discussion more specific.

Leave your destination and WhatsApp number or email address. SHENLI will use your requirements to prepare the configuration and quotation for review.

[Get an S250 Configuration and Price]
[Ask About S250 Spare Parts]