28" DTH Bits

DTH BITS

Teamwhole manufactures wide range and most efficient down-the-hole (DTH) hammers and bits for the mining blasting, water well especially deep well drilling, foundation construction etc. Our products trust by drilling contractor because of the advantages.

⬅ Go Back

28" DTH BITS

Bit shank: TH28
Bit face: Concave, Flat
Button type: Semi-ballistic, Spherical

Get A Quote

TEAMWHOLE offers drill bits for all major DTH shank designs, known for precision engineering, top-tier heat-treatment, and high-quality tungsten carbide inserts. 
 
Our advanced production and proprietary heat-treatment ensure consistent, dependable quality in drilling consumables. All our drill bits feature rigorously tested tungsten carbide inserts. 
 
Through customer collaboration and strict production control, we continuously enhance our technologies, dedicated to innovation, quality, durability, and customer service. 

DTH BIT Face design

Flat Face	Concave Face	Convex Face	Drop Center Face
Suitable for general purpose drilling, including hard and abrasive rock formations.	Recommended for drilling in soft to hard formations, the concave face design enhances stability and reduces equipment vibration, ensuring straighter holes	Suitable for various drilling applications, including soft, medium-hard, and abrasive rock, providing both speed and durability.	Especially used in large diameter bits to ensure straight holes in piling and foundation drilling.

Carbides Shape Option

Spherical

Parabolic

TEAMWHOLE BITS FOR 28” HAMMER
Bit shank	Diameter		Qty*Button Diameter.mm		Flushing Holes	Weight (kg)
Bit shank	mm	inch	Gauge	Front	Flushing Holes	Weight (kg)
TK28	800	31.5	5422mm + 8422mm	4520mm + Side 4814mm	6	1500
TK28	1000	39	66*22mm	18519mm + Side 5414mm	6	1800