PCBN
PCBN Turning Inserts
CNGA, DNGA, TNGA, SNGA, WNGA and VNGA geometries for hardened steel and cast iron.
Read More →PCD, PCBN (CBN) Inserts Manufacturer
JWCT is a PCD, PCBN (CBN) inserts manufacturer based in China. Factory-direct prices, strict quality control on every batch and fast worldwide delivery — a reliable supplier for your long-term tooling supply.
Request a Quote →Superhard Cutting Tools
Eight product families covering turning, milling, drilling, grooving and special tooling — all produced in our own plant.
PCD
PCD Turning Inserts
Polycrystalline diamond inserts for aluminium alloys, composites and high-silicon non-ferrous parts.
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PCBN
Grooving Inserts
Full-radius and face grooving inserts with custom edge preparation on request.
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PCD
PCD Milling Cutters
Face mills, shell mills and end mills for aluminium, CFRP and other composite materials.
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PCD
Drilling & Reaming Tools
PCD drills and reamers giving Ra 0.8 μm or better in ductile iron and aluminium bores.
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Custom
Custom Form Tools
Made-to-drawing form tools that combine several operations into a single pass.
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Brazed
Brazed & Monocrystal Tools
Brazed PCD/PCBN tips and single-crystal diamond tools for finishing and optical surfaces.
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Blanks
PCD & PCBN Blanks
Cutting tips and blanks for tool makers who grind and braze their own geometries.
Read More →600+
Orderable insert codes
58
ISO 1832 shape classes
20+
Years of manufacturing
30+
Countries supplied
Factory Photo
20+
Years in superhard tooling
PCD, PCBN & CBN Inserts, Made In-House in Shanghai, China
JWCT specializes in superhard cutting tools — PCD inserts for aluminium and non-ferrous machining, PCBN and CBN inserts for hardened steel and cast iron, plus brazed tools, blanks and made-to-drawing specials. Supplying factory-direct keeps prices competitive, quality consistent and delivery fast.
Over 600 orderable codes are held across PCD and PCBN, covering 58 ISO 1832 shape classes. Every batch is traceable back to its material lot, and every shipment leaves with an inspection report.
In-house production
Sintering, brazing and grinding all under one roof.
24-hour quotation
A clear price back within one working day.
Application engineers
Grade and parameter advice for your workpiece.
Export experience
Shipping, customs and after-sales in 30+ countries.
Where Our Tools Are Running
Six representative jobs from production lines we supply — with the grade and cutting data we recommended.
Automotive
Crankshaft rough & finish turning
Hardened steel HRC 55–60. Tool life tripled against the previous supplier on the same machine.
CNMA120408180 m/min×3 tool life
Wind Power
Hub bore reaming for turbine hubs
Ductile iron hub bores finished in one pass with stable surface roughness across the batch.
PCD reamer280 m/minRa 0.8 μm
Bearings
Bearing ring raceway turning
Hard turning replaced grinding on 80% of the SKU range, removing a whole process step.
DNGA150604Hard turning−1 operation
Hydraulics
Valve body seat machining
A custom PCD form tool replaced three separate operations with a single plunging pass.
Custom form tool3→1 passPCD
Steel Mill
Roll turning on a continuous caster
Chilled cast iron rolls cut at high speed through full 12-hour shifts with predictable wear.
TNGA160404600 m/min12 h shift
Automotive
Transmission gear shaft turning
Batch consistency held across 5,000 units per shift on a hardened shaft line.
WNGA0804045,000 pcs/shiftPCBN
Certificates & Test Reports
Certificates are placeholders until the scanned copies are supplied.
ISO 9001:2015
CE Declaration
SGS Factory Audit
Material Test Report
Export Licence
Company News & Technical Notes
Grade recommendations, cutting-parameter studies and factory updates from our application team.
07Sep
21Aug
04Aug
Tell Us What You Need to Machine
Send a drawing, an ISO designation or just a description of the workpiece. Our engineers will come back with a grade recommendation, a price and a delivery date within one working day.
Tel / WhatsApp
+86 186 1638 2005
Email
[email protected]
Factory Address
Jinhu Road, Pudong New Area, Shanghai, China
Working Hours
Monday – Saturday, 8:30 – 18:00 (GMT+8)