📦 DTH Drill Bits

M30A DTH Drill Bit

Name: M30A DTH Drill Bit
Brand: Kaishan
SKU: M30A
Availability: InStock

Model: M30A

M30A DTH Drill Bit (official model M30A). Source: Zhejiang Kaishan Heavy Industry product centre.

Best For

Open-Pit Mining Water Well Drilling Quarrying Foundation Piling

Technical Specifications

Model	M30A
Type	DTH Button Bit
Size	76 mm - 90 mm
Application	Mining, Water Well, Quarrying
Material	Alloy Steel Body with Tungsten Carbide Buttons
Weight	2.5 kg - 4.0 kg
Packing	Wooden Case or Carton

Get a Quote Check Fit

Selection Advantages Applications Comparison Components Principle Features Packaging Service FAQ

Product Details

## Overview Kaishan M30A DTH drill bits are precision-engineered tools for down-the-hole hammer drilling in demanding applications. As a leading product in the Drilling Tools category, the M30A combines advanced metallurgy with optimized geometry to deliver superior performance in mining, water well, and construction drilling. Designed for 3-inch hammers, these bits are available in diameters from 76 mm to 90 mm, making them ideal for blast hole drilling, water well development, and geotechnical projects. ## Technical Features The M30A features a high-strength alloy steel body that resists fatigue and breakage under high impact loads. Tungsten carbide buttons are strategically arranged to maximize rock fracture efficiency and minimize wear. The bit head is available in flat, convex, or concave face designs to match different rock formations. Large air flushing holes ensure rapid cuttings removal, reducing regrinding and extending bit life. The splined shank provides a secure fit with the hammer, preventing slippage and improving energy transfer. Each bit undergoes rigorous heat treatment and quality inspection to ensure consistent hardness and toughness. ## Applications These bits excel in medium to hard rock such as granite, basalt, limestone, and sandstone. They are widely used in open-pit mining, quarrying, water well drilling, and foundation piling. The M30A is compatible with popular DTH hammers including COP32, DHD3.5, Mission30, and similar 3-inch hammers. Whether you are drilling vertical, horizontal, or inclined holes, the M30A delivers reliable performance and extended service life. ## Why Choose Kaishan M30A With decades of experience in drilling equipment manufacturing, Kaishan ensures each M30A bit meets international standards for quality and reliability. Our global distribution network and technical support team provide fast response and expert assistance. By choosing the M30A, you invest in higher productivity, lower downtime, and reduced cost per meter drilled.

Technical Selection

Key parameters for matching this machine to your job. Send us your hole diameter, depth and rock condition and our engineers will confirm the right configuration.

Weight

2.5 kg - 4.0 kg

Model

M30A

Type

DTH Button Bit

Size

76 mm - 90 mm

Application

Mining, Water Well, Quarrying

Material

Alloy Steel Body with Tungsten Carbide Buttons

Packing

Wooden Case or Carton

Not sure this model fits? Tell us the hole diameter and depth — we will confirm the matching rig, compressor and hammer.

Check with an engineer

Key Advantages

✓

Premium tungsten carbide buttons for extended wear life

✓

High-strength alloy steel body withstands high impact

✓

Optimized button layout for fast penetration in hard rock

✓

Large air flushing holes for efficient cuttings removal

✓

Available in flat, convex, and concave head designs

✓

Compatible with COP32, DHD3.5, Mission30 and similar hammers

Applications

📍 Open-Pit Mining

Blast hole drilling in medium to hard rock formations.

Solution: M30A bits with convex face for high penetration rates and uniform wear.

📍 Water Well Drilling

Constructing water wells in overburden and bedrock.

Solution: Flat face design with large flushing holes for efficient cuttings removal.

📍 Quarrying

Drilling blast holes for aggregate production.

Solution: Concave face bits for improved hole straightness and reduced deviation.

📍 Foundation Piling

Drilling for foundation piles in construction projects.

Solution: Durable M30A bits with splined shank for secure hammer connection.

Similar Models in This Category

This model is unique in its series — here are similar models from the same category.

Model	Model	Type	Size	Application	Material	Inquire
M30AThis model	M30A	DTH Button Bit	76 mm - 90 mm	Mining, Water Well, Quarrying	Alloy Steel Body with Tungsten Carbide Buttons	Get a Quote
K10	K10	DTH Drill Bit (Down-the-Hole Button Bit)	90–130 mm diameter (customizable)	Mining, quarrying, water well drilling, construction	Alloy steel body with tungsten carbide buttons	Get a Quote
K3	K3	DTH Drill Bit	76mm - 152mm	Mining, Quarrying, Water Well Drilling	Alloy Steel with Carbide Buttons	Get a Quote
K30	K30	DTH Button Bit	76mm - 152mm (customizable)	Mining, Quarrying, Water Well, Construction	Alloy Steel Body with Tungsten Carbide Buttons	Get a Quote
K4	K4	DTH Drill Bit	Φ110 mm (standard); other sizes available	Mining, water well drilling, quarrying, construction	Alloy steel body with carbide button inserts	Get a Quote
K40	K40	DTH Button Bit	76mm - 152mm (3" - 6")	Mining, quarrying, water well drilling, construction	Alloy steel body with tungsten carbide buttons	Get a Quote
K5	K5	DTH Button Bit	130 mm - 152 mm diameter	Mining, quarrying, water well drilling, foundation engineering	Alloy steel body with tungsten carbide buttons	Get a Quote
K50	K50	DTH Drill Bit (Button Bit)	5 inch (127 mm) shank, 130-140 mm diameter	Mining, quarrying, water well drilling, construction	Alloy steel body with tungsten carbide buttons	Get a Quote
K6	K6	DTH Button Bit	76mm - 152mm (3" - 6")	Mining, Quarrying, Water Well Drilling, Construction	Alloy Steel Body with Tungsten Carbide Buttons	Get a Quote

Compare 2–3 models? Tick the boxes and send them together — we will quote each one for you.

Inquire All

Tip: select multiple models and click “Inquire All” — the selected models are added to the quote form automatically, so you get a faster quotation.

Not sure which model fits your project? Send us your working pressure and air demand — our engineers will recommend the right one.

Get a Recommendation 💬 WhatsApp

Main Components

Alloy steel body
Tungsten carbide buttons
Splined shank
Flushing holes
Face design (flat/convex/concave)
Retaining ring
Chuck
Wear sleeve

Working Principle

DTH drill bits operate at the bottom of the hole, directly impacting the rock with high-frequency blows from the hammer. The bit's tungsten carbide buttons crush and fracture the rock under impact and rotation. Compressed air is forced through the bit's flushing holes to remove cuttings from the hole bottom and carry them to the surface. The bit body transfers impact energy from the hammer piston to the rock, while the splined shank ensures proper alignment and torque transmission. The design of the button layout and face shape determines the bit's penetration rate and wear pattern. The M30A's optimized geometry ensures efficient energy transfer, fast cuttings removal, and long service life in demanding drilling conditions.

Detailed Features

▸High wear resistance
▸Excellent impact toughness
▸Fast penetration rate
▸Low air consumption
▸Interchangeable with major brands
▸Available in various diameters
▸Strict quality control
▸Cost-effective drilling

Packaging & Shipping

Each Kaishan M30A DTH drill bit is packed in a wooden case or carton with rust-proof paper and foam protection. Bits are secured to prevent movement during transport. Standard export packaging suitable for sea freight. Container load: 500-800 pieces per 20ft container depending on size. Delivery time: 15-30 days after order confirmation. Port of shipment: Ningbo or Shanghai, China.

After-Sales Service

Kaishan offers a 6-month warranty on M30A DTH drill bits against manufacturing defects. Our 24-hour customer service team provides technical support and troubleshooting. We offer free training on bit selection and operation for bulk orders. A full range of spare parts and accessories is available for fast delivery. Our global network ensures quick response to after-sales needs.

Frequently Asked Questions

What hole diameters can the M30A DTH button bit drill?+

The M30A covers a size range of 76 mm to 90 mm. It is a DTH button bit in the 3-inch class, with weight from 2.5 kg to 4.0 kg depending on size.

What is the M30A DTH bit made of?+

The M30A uses an alloy steel body with tungsten carbide buttons. The button layout is optimized for fast penetration in hard rock, and large air flushing holes support efficient cuttings removal.

Which DTH hammers are compatible with the M30A bit?+

The M30A is compatible with COP32, DHD3.5, Mission30 and similar hammers. It is a 3-inch class shank bit, so it matches hammers in that class.

What applications is the M30A DTH button bit used for?+

The M30A is used for mining, water well, quarrying and foundation piling. Typical work includes blast hole drilling, water well development and geotechnical projects in medium to hard rock formations.

What head designs are available for the M30A bit?+

The M30A is available in flat face, convex and concave head designs. The head design can be matched to different rock conditions.

How is the M30A DTH drill bit packed for shipping?+

Each M30A bit is packed in a wooden case or carton with rust-proof paper and foam protection. Bits are secured to prevent movement, and a 20ft container holds 500-800 pieces depending on size.

What warranty does Kaishan offer on the M30A DTH bit?+

Kaishan offers a 6-month warranty on M30A DTH drill bits against manufacturing defects. A 24-hour customer service team provides technical support and troubleshooting.

How does the M30A differ from other DTH bits in the range?+

The M30A is a 3-inch class DTH button bit with a 76 mm to 90 mm diameter range and 2.5 kg to 4.0 kg weight. It is compatible with COP32, DHD3.5 and Mission30 hammers.