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This Medium/Hard Rock Drilling Tricone Bit is built for stable ROP and predictable torque in interbedded shale–limestone–sandstone. The new-formula TCI layout resists chipping as formations firm up, while the silver-plated cone ID and precision journal package maintain a thin, even lube film—less heat, fewer surprises. Three-jet hydraulics keep cutters exposed, reducing regrind that taxes pumps. Standard 6 5/8 API REG streamlines string integration across rigs and geos. For field setup, the published IADC-537 operating window gives a safe start, then you tune to torque and cuttings—an approach that lowers NPT and total hole cost.
HENGJI BIT SPEC | IADC CODE 537 | |
Diameter | 9 1/2(241.3mm) | |
Tooth Type | TCI | |
Bearing Type | Elastomer sealed bearing | |
Circulation Type | Mud fluid | |
Thread Connection | 6 5/8 API REG PIN | |
Nozzle | three jet nozzles | |
Gauge Protection | Available | |
Shirttail Protection | Available | |
Operating Parameters | ||
RPM(r/min) | 120~50 | |
WOB(KN) | 0.45~1.0 | |
Formations | Soft to medium formations with low compressive strength, such as medium, soft shale, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds, etc. | |
Application | water well drilling,oil &gas well drilling ,HDD,exploration,geothermal well drilling,drilling projects,etc | |
There are full types of drill bits for your choosing in Hengji . Include TCI tricone bit,steel tooth tricone bit,single roller cone bit,pdc bit, hole opener,drag bit, etc.
Our bits are exported to global 58 countries. With good quality drill bits, we are the approved drill bits manufacturer and supplier for famous oil gas companies.As a good reputation OEM supplier, we are also a famous OEM manufacturer for famous companies.
ISO9001 & SGS Certified drill manufacturer, we are proud to bring you top-quality drill bits at good prices. Door to Door delivery service is available too. Send us a mail to get the best price now.
Cutting structure that keeps ROP: Optimized TCI grades and row spacing deliver clean fracture rather than powdering; sustained footage across abrasive stringers.
Gauge you can trust: Multiple heel positions, gauge trimmers, and shirttail hardfacing protect diameter and trajectory on longer runs.
Sealing built for uptime: Journal bearing with O-ring seal, ball-lock cones, silver-plated cone ID; proven thermal/load stability for medium-hard programs.
Industry-standard parameter window: For IADC 537, references indicate ~0.5–1.05 kN/mm WOB and ~50–220 rpm depending on formation/rig—ample room to optimize.
High-temp lubrication options: Peer 537 designs use compensators and grease formulations rated up to 250 °C—available on request for hotter holes.
Formations & scenarios. Best in medium to medium-hard formations with abrasive stringers typical of water-well and O&G surface/intermediate sections; also HDD and geothermal.
Cutting structure. New-formula tungsten carbide inserts with reinforced crest geometries reduce spalling; inner/heel rows and unequal spacing manage breakage and toolface stability.
Gauge/shirttail protection. Carbide and hardfacing across heel/shirttail retain gauge; strengthened spear point limits under-gauge risk on long intervals.
Bearing & sealing. Journal design, ball-locked cones, silver-plated cone ID; elastomer O-ring as standard, metal-seal options available for harsher duty cycles.
Operating guidance. Start in the 537 window (e.g., WOB ≈ 0.6–0.8 kN/mm, RPM ≈ 80–120), then trim to torque and cuttings character; supplier listing shows RPM 120–50 and WOB 0.45–1.0 kN as on-page references.
Thread & hydraulics. 6 5/8 API REG PIN; 3-jet hydraulics for mud rotary systems common to well and HDD programs.
Quality & documentation. ISO9001 & SGS credentials; API-aligned practices and inspection reports available for QA packages.
Packaging, lead & MOQ. Crated in wood boxes; typical ~1-week ship when in stock; MOQ 1 pc customary across platform sellers; logo/packaging customization supported.
Beyond a generic “9-1/2 inch,” you get predictable footage and cleaner hole conditions. Manufacturing is ISO9001 & SGS certified, and our bits are in 58+ countries, which means specs translate to field reliability, not just datasheets. For procurement, we can align on API thread verification, inspection reports, and packing lists that pass audits. Operations get parameter guidance based on the IADC-537 window—and options (e.g., metal-seal or high-temp grease) when BHST climbs. Logistics are straightforward: wood-crate packaging and rapid dispatch when stocked; customization for nozzle and branding to keep your fleet consistent.
Q1. What start-up parameters do you recommend?
Use the IADC-537 envelope as a baseline—e.g., 0.6–0.8 kN/mm and ~80–120 rpm—then tune by torque stability, vibration, and cuttings size. Published ranges for 537 cover ~0.5–1.05 kN/mm and 50–220 rpm.
Q2. Do you offer alternative seals or high-temp packages?
Standard is elastomer O-ring; metal-seal variants and compensated, high-temp grease systems (to ~250 °C) are common for comparable 537 designs—available on request per BHST and motor plan.
Q3. Which documents can you provide for QA/PO?
ISO certificates, inspection reports, and API-aligned process documentation; packing lists and crate specs for inbound QC.
Q4. What are the logistics norms for B2B orders?
MOQ 1 pc is typical; wood-crate packing; ~1-week ex-stock ship; customization for logo/packaging offered by platform suppliers when needed for fleet identity.
This Medium/Hard Rock Drilling Tricone Bit is built for stable ROP and predictable torque in interbedded shale–limestone–sandstone. The new-formula TCI layout resists chipping as formations firm up, while the silver-plated cone ID and precision journal package maintain a thin, even lube film—less heat, fewer surprises. Three-jet hydraulics keep cutters exposed, reducing regrind that taxes pumps. Standard 6 5/8 API REG streamlines string integration across rigs and geos. For field setup, the published IADC-537 operating window gives a safe start, then you tune to torque and cuttings—an approach that lowers NPT and total hole cost.
HENGJI BIT SPEC | IADC CODE 537 | |
Diameter | 9 1/2(241.3mm) | |
Tooth Type | TCI | |
Bearing Type | Elastomer sealed bearing | |
Circulation Type | Mud fluid | |
Thread Connection | 6 5/8 API REG PIN | |
Nozzle | three jet nozzles | |
Gauge Protection | Available | |
Shirttail Protection | Available | |
Operating Parameters | ||
RPM(r/min) | 120~50 | |
WOB(KN) | 0.45~1.0 | |
Formations | Soft to medium formations with low compressive strength, such as medium, soft shale, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds, etc. | |
Application | water well drilling,oil &gas well drilling ,HDD,exploration,geothermal well drilling,drilling projects,etc | |
There are full types of drill bits for your choosing in Hengji . Include TCI tricone bit,steel tooth tricone bit,single roller cone bit,pdc bit, hole opener,drag bit, etc.
Our bits are exported to global 58 countries. With good quality drill bits, we are the approved drill bits manufacturer and supplier for famous oil gas companies.As a good reputation OEM supplier, we are also a famous OEM manufacturer for famous companies.
ISO9001 & SGS Certified drill manufacturer, we are proud to bring you top-quality drill bits at good prices. Door to Door delivery service is available too. Send us a mail to get the best price now.
Cutting structure that keeps ROP: Optimized TCI grades and row spacing deliver clean fracture rather than powdering; sustained footage across abrasive stringers.
Gauge you can trust: Multiple heel positions, gauge trimmers, and shirttail hardfacing protect diameter and trajectory on longer runs.
Sealing built for uptime: Journal bearing with O-ring seal, ball-lock cones, silver-plated cone ID; proven thermal/load stability for medium-hard programs.
Industry-standard parameter window: For IADC 537, references indicate ~0.5–1.05 kN/mm WOB and ~50–220 rpm depending on formation/rig—ample room to optimize.
High-temp lubrication options: Peer 537 designs use compensators and grease formulations rated up to 250 °C—available on request for hotter holes.
Formations & scenarios. Best in medium to medium-hard formations with abrasive stringers typical of water-well and O&G surface/intermediate sections; also HDD and geothermal.
Cutting structure. New-formula tungsten carbide inserts with reinforced crest geometries reduce spalling; inner/heel rows and unequal spacing manage breakage and toolface stability.
Gauge/shirttail protection. Carbide and hardfacing across heel/shirttail retain gauge; strengthened spear point limits under-gauge risk on long intervals.
Bearing & sealing. Journal design, ball-locked cones, silver-plated cone ID; elastomer O-ring as standard, metal-seal options available for harsher duty cycles.
Operating guidance. Start in the 537 window (e.g., WOB ≈ 0.6–0.8 kN/mm, RPM ≈ 80–120), then trim to torque and cuttings character; supplier listing shows RPM 120–50 and WOB 0.45–1.0 kN as on-page references.
Thread & hydraulics. 6 5/8 API REG PIN; 3-jet hydraulics for mud rotary systems common to well and HDD programs.
Quality & documentation. ISO9001 & SGS credentials; API-aligned practices and inspection reports available for QA packages.
Packaging, lead & MOQ. Crated in wood boxes; typical ~1-week ship when in stock; MOQ 1 pc customary across platform sellers; logo/packaging customization supported.
Beyond a generic “9-1/2 inch,” you get predictable footage and cleaner hole conditions. Manufacturing is ISO9001 & SGS certified, and our bits are in 58+ countries, which means specs translate to field reliability, not just datasheets. For procurement, we can align on API thread verification, inspection reports, and packing lists that pass audits. Operations get parameter guidance based on the IADC-537 window—and options (e.g., metal-seal or high-temp grease) when BHST climbs. Logistics are straightforward: wood-crate packaging and rapid dispatch when stocked; customization for nozzle and branding to keep your fleet consistent.
Q1. What start-up parameters do you recommend?
Use the IADC-537 envelope as a baseline—e.g., 0.6–0.8 kN/mm and ~80–120 rpm—then tune by torque stability, vibration, and cuttings size. Published ranges for 537 cover ~0.5–1.05 kN/mm and 50–220 rpm.
Q2. Do you offer alternative seals or high-temp packages?
Standard is elastomer O-ring; metal-seal variants and compensated, high-temp grease systems (to ~250 °C) are common for comparable 537 designs—available on request per BHST and motor plan.
Q3. Which documents can you provide for QA/PO?
ISO certificates, inspection reports, and API-aligned process documentation; packing lists and crate specs for inbound QC.
Q4. What are the logistics norms for B2B orders?
MOQ 1 pc is typical; wood-crate packing; ~1-week ex-stock ship; customization for logo/packaging offered by platform suppliers when needed for fleet identity.
