SP680
High air pressure DTH bit · Ø154/165/171 等 mm head
Full Specifications
| Head Shape | Flat Face/Concave face |
|---|---|
| Shank Length | 231 |
| Spline | 12 |
Specifications describe the standard configuration and are subject to change with the air package, tooling and options you select. Confirm the final datasheet with us before placing an order.
About the drill bits and tools range
Tooling is where drilling cost is actually decided. A bit that is slightly too hard for the formation blunts slowly and drills slowly; one that is slightly too soft drills fast and wears out. This range covers DTH bits in the QL, SP, SD and CIR shank families, PDC core bits, and drill rods and adapters — specified against the hammer and the rock rather than sold as a generic consumable.
Where the SP680 fits
SP680 is one of the drill bits and tools configurations we build, specified at bit shank 231. High air pressure DTH bit · Ø154/165/171 等 mm head.
Typical applications
- DTH blasthole drilling — Bits matched to the hammer shank and to the rock abrasiveness.
- Core exploration and grade control — PDC and impregnated core bits for recovered core in mineral exploration.
- Water well and geothermal completion — Bits sized to the casing programme and the hammer in use.
- Anchor and foundation holes — Button bits for short holes in hard rock and reinforced concrete.
- Rod strings and adapters — Drill rods, subs and adapters matched to the rig and the hammer thread.
How it works
A DTH bit transfers the piston impact into the rock through tungsten carbide buttons set in a steel head. Button shape, count and protrusion are chosen for the rock: hard and abrasive rock needs more, smaller buttons in a flatter face; soft and fractured rock needs fewer, larger buttons with a more pronounced face. The head gauge determines hole diameter, and the shank determines which hammer the bit fits.
- Face shape and button layout should follow the rock, not the price list.
- Gauge buttons set the hole diameter; worn gauge buttons make an undersize hole and a stuck bit.
- The shank must match the hammer exactly — a forced fit damages both.
How to specify the right configuration
Tell us the hammer model and the rock description first. Bit selection is a two-variable problem: the shank decides what fits, the rock decides the face and button layout.
- Confirm shank type against your hammer before ordering any bit.
- Match head diameter to the hole range of the hammer, not to the nominal hole size alone.
- Choose button layout by rock type: harder and more abrasive rock generally suits more buttons with a flatter face.
- For core work, specify the core diameter and the recovery requirement rather than only the hole size.
Frequently Asked Questions
Which bit fits my hammer?
Match the shank designation. SP, QL, SD, BR and CIR are different standards; a bit from one family will not fit a hammer from another. Send us the hammer model and we will confirm the exact bit.
How do I choose button layout for my rock?
Describe the rock — hardness, abrasiveness, whether it is massive or fractured. Hard abrasive rock generally needs more, smaller buttons; soft or fractured rock needs fewer, larger ones.
Do you make custom bit sizes?
Non-standard head diameters and shank combinations can be produced to order. Send the drawing or the specification and we will confirm feasibility and lead time.
Do bits come with the hammer?
Bits can be quoted together with hammers, or separately if you already have the hammer. Both are matched to the same shank standard.
What is the price of the SP680?
Price depends on configuration — the air package, the tooling included, and the shipping terms. Send us the hole diameter, depth and ground conditions and we will quote against your job rather than a list price.
Tell Us About Your Site
Send us your geology, hole diameter and target depth.