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E Series (Economy)
2.0 ±0.2 mm diamond layer. Cost-effective for gauge, edge, reaming and back cutters in general formations.
PDC Rock Bit Cutters
Скальное долото PDC
A PDC rock bit shears and scrapes rock with polycrystalline diamond compact (PDC) cutters fixed to its blades. Field Diamond Limited supplies verified PDC cutters — conical, step, square, 3D, 4D and bullet shapes — for oil and gas, mining, water well, geothermal and horizontal directional drilling, with tested wear, impact and thermal performance and custom grades.
Cutter Placement & Formation Guide
Match The Cutter Shape To The Bit Position And Formation.
PDC rock bit cutters are not interchangeable: the diamond-layer geometry sets how a cutter loads, shears and clears rock. Use this table to shortlist the right shape before you request a quote.
| Cutter shape | Bit position | Best formation / duty |
|---|---|---|
| Коническая | Back / damping cutter | Extremely hard rock, granite, coal mining and tunnel construction |
| 3D | Primary cutter | Soft plastic clay, complex geology and deep-sea drilling |
| 4D | Primary / pilot cutter | Hard interbedded, directional and ultra-deep wells |
| Bullet | Primary cutter | DTH hammer in abrasive medium-hard rock; high-ROP horizontal wells |
| Шаг | Primary cutter | Pavement and stone cutting (bolt fixation) |
| Square | Gauge cutter | Granite and marble chain-saw cutting |
Verified Wear, Impact & Thermal Data
Check The Numbers Before You Commit To A Grade.
Standard flat cutters OGF1308, OGF1313 and OGF1613 are tested under identical conditions — VTL granite wear, drop-weight impact and thermal cycling — so you can compare grades against real data.
| Модель | VTL granite wear (cut length) | Drop-weight impact (cumulative) | Thermal cycle (surface crack) |
|---|---|---|---|
| OGF1308 | 2.99 km over 6.86 turns | 3,810 J (60–90 J × 10) | 755–805 °C cyclic |
| OGF1313 | 3.90 km over 9 turns | 3,810 J (60–90 J × 10) | 755–805 °C cyclic |
| OGF1613 | 3.48 km over 8 turns | 3,540 J (60–90 J) | 755–805 °C cyclic |
Test basis: VTL dry turning on granite at 1.25 mm depth of cut and 107 m/min; Cr12MoV drop-weight anvil. Dimensional tolerance for the 1313 sample: diameter 13.44 ±0.03 mm, total height 13.20 ±0.10 mm.
Grade Series & Customization Boundaries
Pick The Grade And Chamfer That Match Your Duty.
Flat cutters come in E, P and T grades with different diamond-layer thickness, plus a 30° large chamfer and cobalt-removal option for thermal-stable, abrasive duty.
P Series (Premium)
2.8 ±0.2 mm diamond layer. The primary-cutter grade for abrasive oil, gas, water well and geothermal duty.
T Series (Top Tier)
2.8 ±0.2 mm diamond layer. Highest wear and impact margin for the hardest, most abrasive primary cutting.
Настройка
30° × 1.7 mm large chamfer, cobalt removal (leached), custom shape, diamond-layer thickness and diameter per drawing.
Warranty, Failure Analysis & Logistics
Know The Support Behind The Order.
Field Diamond backs PDC cutters with a defined warranty, fast failure analysis and insured logistics so supply risk stays controlled.
Free replacement or return when a product fails due to a quality problem and cannot be used.
Remote root-cause analysis of a failed cutter within 48 hours after use.
Samples can be validated by you or your bit manufacturer under real drilling conditions.
DHL, FedEx and SF Express with transport insurance against loss.
CATEGORY INTRODUCTION & BUYER PAIN POINTS
Understand The Category Before Comparing Models.
Understand how the diamond-layer shape, size, grade and bit position determine performance before you shortlist a model.
What a PDC rock bit is
A PDC rock bit is a fixed-cutter drill bit whose cutting structure is made of polycrystalline diamond compact (PDC) cutters. As the bit rotates, the cutters shear and scrape rock. PDC rock bits are used in oil and gas, mining, water well, geothermal and horizontal directional drilling; the cutter shape, size, grade and placement determine how the bit performs in a given formation.
What goes wrong at the cutting edge
Buyers face premature cutter wear, edge chipping and thermal damage in abrasive or interbedded formations, lost cutters from weak brazing or pocket support, and unclear grade-to-formation matching. Choosing the wrong cutter shape or grade raises bit trips, lowers rate of penetration and increases cost per meter.
PRODUCT REQUIREMENTS FOR THIS DUTY
Translate The Operating Condition Into Measurable Requirements.
Translate the rock-drilling duty into four measurable requirements your cutter supplier must meet.
Impact and wear resistance
Cutters absorb axial weight-on-bit and torque under shock and vibration. Grades are verified by drop-weight impact (60–90 J) and VTL granite wear tests before shipment.
Environment and exposure
High-abrasion rock, interbedded strata, hard granite and quartzite, and elevated downhole temperature. Cobalt-removed (leached) and thermal-stable grades extend life in these conditions.
Fit, interface and standards
Diameter tolerance ±0.03 mm and height ±0.10 mm. Cutters braze to the bit pocket with Bag-24 silver alloy at 670–730 °C; step cutters use bolt fixation instead of brazing.
Commercial and compliance need
E, P and T grade series, 30° large chamfer and cobalt-removal options, ISO 9001:2015 quality system, inspection reports and batch traceability.
RECOMMENDED PRODUCTS / MODELS
Start With A Verified Fit, Then Confirm The Final Specification.
These PDC cutters are the cutting elements built into rock bits. Models differ by diamond-layer geometry — conical, step, square, 3D, 4D and bullet — which sets each cutter's bit position and formation suitability.
Коническая фреза PDC
For extremely hard formations, granite, coal mining and tunnel construction as a shock-absorbing back cutter.
- Применение / подгонкаBack / damping cutter — PDC & DTH bits
- Size range13.44–25.4 mm dia.
- МатериалPCD + WC-Co substrate
- Стандарт интерфейсаBrazed (Ag-based)
Ступенчатая фреза PDC
For pavement and stone cutting with bolt fixation for fast cutter replacement.
- Применение / подгонкаPrimary cutter — pavement & stone
- Size range8.0–13.44 mm dia.
- МатериалPCD + WC-Co substrate
- Стандарт интерфейсаBrazed (Ag-based)
Square Shaped PDC Cutter
For granite and marble chain-saw cutting with multi-edge anti-rotational wear resistance.
- Применение / подгонкаGauge cutter — stone chain saw
- Size range8.0–15.88 mm dia.
- МатериалPCD + WC-Co substrate
- Стандарт интерфейсаBrazed (Ag-based)
3D-образный резец PDC
For complex geology, soft plastic clay and deep-sea drilling as a primary cutter.
- Применение / подгонкаPrimary cutter — oil & gas, deep sea
- Size range13.44–19.05 mm dia.
- МатериалPCD + WC-Co substrate
- Стандарт интерфейсаBrazed (Ag-based)
4D Shaped PDC Cutter
For hard interbedded formations, directional and ultra-deep wells as a primary or pilot cutter.
- Применение / подгонкаPrimary / pilot cutter — directional & ultra-deep
- Size range13.44–19.05 mm dia.
- МатериалPCD + WC-Co substrate
- Стандарт интерфейсаBrazed (Ag-based)
Bullet Shaped PDC Cutter
For DTH hammer bits in abrasive medium-hard formations and high-ROP horizontal drilling.
- Применение / подгонкаPrimary cutter — DTH & horizontal
- Size range9.6–19.05 mm dia.
- МатериалPCD + WC-Co substrate
- Стандарт интерфейсаBrazed (Ag-based)
PRODUCTION & DELIVERY
Make The Commercial Route Clear Before The First Inquiry.
Separate sample, pilot and bulk supply so the commercial route is clear before the first inquiry.
Samples are available for qualified buyers and can be field-tested with your bit or cutter manufacturer before bulk order.
Small-batch and pilot orders are supported; standard cutters ship in 7–15 days depending on model and quantity.
Repeat and bulk supply with reserved capacity; price basis is negotiated by grade, size and volume.
Standard production lead time is 7–15 days; customized shapes, grades and chamfers may extend the lead time.
Ships worldwide via DHL, FedEx and SF Express with transport insurance covering loss.
Commercial invoice, packing list, inspection report, ISO 9001 certificate and batch traceability records.
APPLICATION PAIN POINTS & SOLUTIONS
Connect Each Recommended Model To A Specific Failure Mode.
Each recommended shape answers a specific failure mode with a verified specification response.
Conical PDC Cutter · Hard-rock shock and vibration
Why it matters: In hard, abrasive formations, main cutters take impact that chips edges and stalls the rate of penetration. Specification response: The conical diamond layer concentrates axial load and absorbs shock as a back or damping cutter, and lasts 5–10 times longer than carbide equivalents in demanding rock.
4D Shaped PDC Cutter · Stick-slip and poor cuttings evacuation
Why it matters: Hard interbedded layers trigger stick-slip vibration and bit balling, which overheat and break cutters. Specification response: The asymmetric 4D face and compound curved surface suppress stick-slip and improve cuttings evacuation for higher rates of penetration in directional and ultra-deep wells.
Bullet Shaped PDC Cutter · Abrasive DTH formations
Why it matters: In DTH hammers drilling abrasive medium-hard rock, carbide buttons wear and blunt quickly. Specification response: The streamlined bullet diamond layer reduces drilling resistance and lasts 5–10 times longer than carbide buttons in high-silica formations.
SELECTION / MATERIAL COMPARISON
Show Buyers When One Grade Is A Better Fit Than Another.
Compare the three flat-cutter grades by diamond-layer thickness, duty and trade-off.
| Grade / model | Best environment | Key advantage | Limit / trade-off |
|---|---|---|---|
| E Series | General formations; gauge, edge and back cutters | 2.0 mm diamond layer; cost-effective | Lower wear margin in abrasive strata |
| P Series | Abrasive oil, gas, water well and geothermal formations | 2.8 mm diamond layer; balanced wear and impact | Higher cost than E series |
| T Series | Hardest, most abrasive primary cutting | 2.8 mm diamond layer; top wear and impact margin | Highest cost; reserve for extreme duty |
NON-STANDARD CUSTOM CHANNEL
Have A Drawing Or Unusual Duty? Send The Minimum Information First.
ACCESSORIES / CONSUMABLES
Reduce Sourcing Gaps Around The Main Product.
Compatible accessories and services around the main cutting element, confirmed from the Field Diamond catalog.
PDC Cutter Grinding Wheels
Resin- and vitrified-bond diamond grinding wheels for machining PDC cutters and carbide, with a design life about 30% longer than standard wheels.
PDC Bit Refurbishment
Replacement and re-configuration of PDC cutters to restore a used bit's performance and lower drilling cost.
PCD & TSP Diamond Materials
Additional polycrystalline and thermally stable diamond materials for specialized cutting and wear applications.
ЧаВо
Questions Buyers Ask Before Ordering.
Answers to the questions buyers ask before ordering rock bit cutters.
Which PDC cutter shape fits my rock bit and formation?
Tell us the bit type, cutter position (primary, back or gauge) and formation. Conical cutters suit hard rock back and damping positions, 3D and 4D shapes suit main cutting in complex and interbedded strata, bullet cutters suit DTH abrasive formations, and step and square cutters suit stone and pavement cutting. An engineer confirms the fit from your bit drawing and formation data.
What is the MOQ, sample policy and lead time?
Samples are available for qualified buyers and can be field-tested with your bit manufacturer. Standard cutters ship in 7–15 days depending on model and quantity; customized shapes and grades may extend the lead time.
Which grade should I choose: E, P or T?
E series (2.0 mm diamond layer) suits gauge, edge and back cutters on cost-sensitive jobs; P series (2.8 mm) is the premium primary-cutter grade for abrasive formations; T series (2.8 mm) is the top grade for the hardest, most abrasive duty. We confirm the grade against your formation and cutter position.
Can you provide drawings, certificates or inspection reports?
Yes. We supply ISO 9001:2015 certification, dimensional inspection reports, wear, impact and thermal test data, and traceability records. Drawings and a non-disclosure agreement can be arranged before sampling or production.
Do you support non-standard customization?
Yes. We customize cutter shape, diamond-layer thickness, chamfer (including a 30° large chamfer), cobalt removal and dimensions to your bit structure and application. Send a drawing through the custom channel and we review feasibility, tooling and MOQ.
REQUEST A TECHNICAL QUOTE
Tell Us The Equipment, Condition And Quantity.
- Engineering support for cutter-to-bit fit and formation matching
- Телефон: +86 138 8687 9351
- Эл. почта: info@fdiamond.cn
- Адрес: № 601, блок B, Международный порт талантов "Оптикс Вэлли", № 815, проспект Гаосинь, Ухань, Хубэй