taper button bit wholesale supplier

For quarry crews, mining contractors and blast-hole drillers, few consumables matter more than the small piece of tungsten carbide screwed onto the end of a jack hammer rod. Taper button bits are the workhorse rock breakers used on hand-held pneumatic drills such as YT23, YT24, YT28 and YN27 units, and the right choice directly affects metres drilled per shift, bit life and your hourly cost. This guide explains how these bits work, how to match the cone angle and button shape to your rock, and what to check before placing a wholesale order.

What is a taper button bit?

A taper button bit is a rock-drilling tool with a conical shank that locks mechanically into the matching taper socket of a drill rod, usually through a hexagonal h22, h25 or h28 rod. Instead of threads, the connection relies on friction created by two matched conical surfaces. The cutting face is studded with spherical or ballistic tungsten carbide buttons that crush rock as the bit is struck and rotated. Because the shank keeps the bit tight with no thread wear, these bits are quick to fit and swap, which makes them popular for bench drilling, ditches, water-well construction and general mining in softer to medium-hard formations.

Taper angle: 7 degree, 11 degree or 12 degree?

The taper degree defines the angle of the conical connection and controls how firmly the bit grips the rod. A 7-degree taper gives the tightest friction fit and the most direct energy transfer, but it is also the hardest to knock off the rod after drilling, which can slow bit changes on busy shifts. An 11-degree taper is the balanced middle ground and is the most common choice for quarrying and general mining, offering solid retention with easier removal. A 12-degree taper delivers the strongest locking force and is favoured for high-impact conditions where the last thing you want is a bit slipping off at the bottom of a hole. Wholesale buyers typically keep the angle consistent with the rods already in the fleet, so the first question to answer is which taper your existing machine and rod system use.

Button shape and carbide grade

Button design decides how fast and how evenly a bit wears. Spherical buttons distribute impact stress evenly across the carbide and are the safest option for hard and abrasive rock, giving high wear resistance and good fracture resistance. Ballistic buttons bite faster in soft to medium rock and are often chosen where penetration rate matters more than extreme longevity, while guide and cross geometries suit specific face designs used by different manufacturers. On the quality side, the grade of tungsten carbide in the buttons matters more than most buyers realise; premium grades keep their edge under sustained percussion, which is the difference between bit life measured in hundreds and thousands of drilled metres. When you buy a taper button bit in bulk, always ask the supplier for the carbide grade and button configuration on the drawing before you commit.

Common sizes and configurations

Tapered button bits are manufactured across a practical range of head diameters, typically from about 26 mm up to 60 mm, with popular sizes at 32, 34, 36, 38, 40 and 45 mm. The number of buttons scales with diameter: a 36 mm face commonly carries seven buttons, while a 45 mm bit may run nine. Flushing holes channel compressed air or water to clear cuttings from the hole, and face profiles range from flat to ｄｒｏｐ-centre depending on the rock. Matching the bit diameter to your drill rod and the required hole size is straightforward, but keeping the same taper angle across the fleet simplifies inventory and keeps spares interchangeable.

What to verify with a wholesale supplier

Buying taper button bits wholesale is cheaper per unit, but the saving only holds if quality stays consistent across the batch. Check a few things on the supplier side before ordering: whether the factory is ISO-certified, how strict the heat treatment and carbide brazing are, whether they can supply a batch sample or technical drawing for approval, what their minimum order quantity and lead time are, and whether they support OEM marking so your brand appears on the shank. A supplier who can explain the taper angle, button count, carbide grade and flushing design of their bits, rather than just quoting a price, is a much safer partner for repeat wholesale business.

Why many contractors buy from Xi'an Heaven Abundant

Xi'an Heaven Abundant Mining Equipment Co., Ltd., operating the TY Drill Bits brand, has manufactured and traded rock drilling tools since 2010 and is ISO 9001 certified. Because the company produces and sells a one-stop range, including PDC bits, tricone bits, thread and taper button bits, DTH hammers, drill rods and diamond core bits, a single order can bundle the bits you need for both surface and underground work, simplifying sourcing and cutting freight per kit. With OEM services available, standard 15-workday production lead times and a flexible range of payment terms, they are a practical fit for contractors who want reliable, spec-clear bits without long supply chains. Whether your job calls for 7-degree, 11-degree or 12-degree taper, telling them your rock type, machine model and rod system is the fastest way to get a recommendation matched to your drilling conditions.