Bit
CIR90 shank button bit
CIR90 splined shank
Confirm bit diameter against hole size and rock.
Low-Pressure DTH Hammer
CIR90 Low-Pressure DTH Hammer — Confirm Top-Sub Configuration
Model:CIR90
Selected configuration:Configuration to be confirmed
Selected reference:PFM-CIR90
Low-pressure DTH hammer for 90–130 mm blast-hole and water-well drilling with CIR90-shank bits.
A valve-equipped, single-piston low-pressure hammer. Confirm bit range, working pressure, top-sub thread and drill-string airflow before quotation.
- Low-pressure 0.7–1.0 MPa class
- CIR90 bit shank and T48×10 top-sub connection
- Central exhaust, no nylon tube required
Request a Configuration-Based Quote
Send rig and compressor details, current hammer bit and pipe markings, available interface evidence, hole and rock conditions, quantity and destination. Unknown evidence is accepted for identification.
Technical Review Scope
Configuration and Quotation Guidance
CIR90 low-pressure DTH hammer inquiry page. The matching bit-shank family, pipe-side top-sub thread and shoulder, operating pressure and air demand at stated conditions, bit and hole range, dimensions, mass and service configuration are not supply guarantees on this page. Confirm them against the PerfoMax quotation drawing and controlled data sheet before ordering.
Compatibility notice: the current page reference T48×10 and the 76 mm pipe designation API 2-3/8 REG are different connection identities and must not be treated as a direct mate. CIR90 naming and pipe outside diameter do not prove compatibility. Do not represent these products as a complete system unless the quotation includes a controlled alternate-top-sub or crossover drawing that identifies both mating threads, shoulders, directions and drawing revision.
Configuration identity
PFM-CIR90 is an inquiry reference, not a complete orderable SKU. It does not define the matching bit-shank family, top-sub, pipe connection, pressure and flow conditions, bit, hole range or service configuration.
Controlled configuration to confirm
- Matching bit-shank family accepted by the supplied hammer.
- Supplied or proposed hammer pipe-side top-sub thread, shoulder and direction.
- Intended drill-pipe thread, shoulder and direction.
- Connection state: direct match proven, alternate top sub proposed, crossover proposed or not known, with no default.
- Operating pressure and air demand with stated conditions.
- Bit and hole range, outside diameter, length, mass, foot-valve requirement and service-kit version.
Buyer inputs
Send the rig and compressor details, current hammer, bit and pipe markings, photos or drawings of both interfaces, intended hole and rock conditions, quantity and destination. An unknown interface may enter an identification inquiry, but it must not proceed as a configuration-specific technical quotation or be represented as a matched system until both interfaces and the controlled drawing revision are resolved.
Engineering and quotation outputs
The quotation must identify both mating interfaces, shoulders and directions, the connection solution, controlled drawing revision, operating-data conditions and configuration identity. A same-thread, alternate-top-sub or crossover statement requires the corresponding controlled drawing.
Inspection and records boundary
This page does not state the hammer mechanism, blow-tube construction, material, heat treatment, hardness, inspection method, record scope or packing as supplied facts. Any such requirement must be expressly accepted and defined in the written quotation or purchase order.
Selection & Technical Guides
Use these guides to prepare operating and interface questions; they do not establish the supplied CIR90 configuration.
- Low-Pressure vs High-Pressure DTH Hammers: How to Match Compressor and Application
- 4-Inch vs 5-Inch DTH Hammer: How to Match Hole Diameter and Air Supply
- DTH Bit Shank Compatibility Guide: Match Hammer, Shank and Foot Valve
- DTH Hammer Troubleshooting: Low Penetration, No Impact, and Common Failure Causes
- DTH Hammer Pre-Shipment Inspection Before Bulk Order: Buyer Acceptance Checklist
At a Glance
90–130 mmHole Range
80 mmOutside Diameter
0.7–1.0 MPaWorking Pressure
Technical Specifications
| Hole Range | 90–130 mm |
|---|---|
| Outside Diameter | 80 mm |
| Working Pressure | 0.7–1.0 MPa |
| Bit Shank | CIR90 |
| Top-Sub Connection | T48×10 square thread |
| Length (less bit) | 628–725 mm |
| Weight (less bit) | 20–21 kg |
| Air Consumption | 5–7 m³/min |
| Structure | Valve-equipped, single piston, central exhaust |
Final interface dimensions, selected configuration and supply scope are stated in the formal quotation or approved drawing.
Compatibility and Required Interfaces
Drill pipe / top sub
T48×10
T48×10 square thread
Match top-sub connection across the drill string.
Air compressor
Low-pressure (0.7–1.0 MPa)
5–7 m³/min at the hammer
Confirm pressure and airflow at the hammer.
DTH Hammer Configuration
Low-Pressure, Single-Piston Structure
A plate-valve single-piston hammer works across a 0.7–1.0 MPa window without a nylon blow tube.
Buyer value
Simple, serviceable structure with high impact transfer and lower air demand.
Selection condition
Confirm working pressure and air consumption for the selected compressor.
Central Exhaust Flushing
Exhaust air is directed through the bit to clear cuttings from the hole bottom.
Buyer value
Efficient hole cleaning supports penetration rate and bit life.
Selection condition
Match flushing design to bit and rock condition.
CIR90 Shank and T48×10 Interface
The hammer presents a CIR90 splined shank to the bit and a T48×10 square thread to the drill pipe.
Buyer value
Correct matching prevents premature wear and transmits rotation and air reliably.
Selection condition
Confirm both interfaces against the existing drill string.
Application Scenarios
- Quarry and surface-mining blast holes
- Water-well and geothermal drilling
- Foundation and construction drilling
- Tunneling and small-diameter drilling
Quality and Pre-Shipment Checks
01
Thread, Dimension and Visual Check
Recorded before shipment when included in the quotation
Approved length, OD, connection and ordered inspection scope
Verify specified dimensions, connection condition, markings and visible surface condition against the approved order.
Supply Scope, MOQ and Delivery
Minimum Order QuantityConfirmed in written quotation
Lead TimeConfirmed in written quotation
Available Supply Configurations
- Final packing list confirmed in the written quotation
Export Packing
Final packaging, corrosion protection, crate or pallet method and shipping marks are confirmed in the written quotation.
Warranty and After-Sales
Warranty, spare-parts scope and service terms are confirmed in the written quotation for the selected supplier configuration.
Safety and Maintenance Notes
Order Documentation
Commercial invoice and packing list; any additional certificates are confirmed per order
Frequently Asked Questions
Is the CIR90 a high-pressure or low-pressure hammer?
Low-pressure. The CIR90 works at 0.7–1.0 MPa and does not need a nylon blow tube. Confirm the compressor pressure and airflow before ordering.
Does 90 mm define the hole size?
No. 90 mm is the hammer outside diameter. The CIR90 drills a 90–130 mm hole depending on the bit selected; confirm bit diameter against your hole plan.
What bit shank and top thread fit this hammer?
CIR90-shank bits at the working end and a T48×10 square thread at the top-sub connection.
Matched DTH Air and Drill-String System
A complete CIR90 DTH string combines a low-pressure air compressor, T48×10 drill pipe, the CIR90 hammer and a CIR90-shank button bit matched to the hole size and rock condition.
Ready to Confirm the Configuration?
Request a Quote for CIR90
No connection state is assumed. Technical review must identify both threads, shoulders and directions in one controlled drawing, then return the connection solution, operating conditions, revision and approved configuration ID.
- Product-specific quotation
- Interface confirmation
- Export packing options
Product Evidence
Product, Component, Configuration and Packing Views
A valve-equipped, single-piston low-pressure hammer. Confirm bit range, working pressure, top-sub thread and drill-string airflow before quotation.
Images support product identification and configuration discussion. Final supplied configuration, inspection scope and packing details are confirmed in the formal quotation.