Q743-725 Tapered Button Bit, 43 mm, 7 Degree Taper

Description

Q743-725 Tapered Button Bit — 43 mm, 7° Taper

The Q743-725 is a tapered button bit with a 43 mm head diameter and seven spherical tungsten carbide buttons, made for hand-held pneumatic rock drills in medium-hard to hard formations. The bit body is machined from heat-treated alloy steel with carbide inserts hot-pressed into precision-drilled holes, and the 7° tapered socket with a 25 mm bore fits standard tapered drill rods. This model is one of our best sellers for the Russian market and matches the taper system widely used on local drill rigs.

Specification

• Model: Q743-725
• Head diameter: 43 mm
• Taper angle: 7°
• Bore (socket) diameter: 25 mm
• Button count: 7 spherical tungsten carbide buttons
• Face design: drop center
• Body material: heat-treated alloy steel
• Inserts: tungsten carbide
• Compatible machines: YT24, YT27, YT28 and other hand-held pneumatic rock drills with 7° taper rods
• Applications: small-diameter blast holes, mining, tunneling, quarrying

Features

• Seven spherical tungsten carbide buttons give balanced face coverage and long service life in hard, abrasive rock.
• Precision-machined 7° taper socket with 25 mm bore keeps a firm, low-wear fit on the drill rod.
• Drop center face improves cuttings evacuation and keeps the hole straight.
• Forged, heat-treated alloy steel body resists cracking under high impact energy.
• Efficient flushing holes clear cuttings quickly and reduce button wear.

How to read the model number

Q743-725 follows the RDT coding system: Q = spherical (ball) button bit, 7 = 7 carbide buttons, 43 = 43 mm head diameter, 7 = 7° taper angle, 25 = 25 mm bore diameter.

Frequently asked questions

What does the model number Q743-725 mean?

Q stands for a spherical button bit, 7 is the number of tungsten carbide buttons, 43 is the head diameter in millimetres, 7 is the taper angle in degrees, and 25 is the bore diameter of the tapered socket in millimetres.

Which drill rods fit this bit?

Any tapered drill rod with a 7° taper and 25 mm bore end, the taper system widely used on hand-held pneumatic drills such as YT24, YT27 and YT28. Send us a photo of your rod end if you are unsure and we will confirm the match.

Can I order other diameters, taper angles or insert shapes?

Yes. Head diameter, taper angle (7°, 11°, 12°), insert shape (spherical or ballistic) and face design are all made to order. OEM markings and private-label packaging are available on request.