WBGT080204L-F PR930 is a genuine Kyocera positive rake trigon finishing insert developed for ultra-small aperture precision boring and miniature thin-wall component turning. With 80° trigonal shape, 5° positive rake angle and F-type sharp micro-finish chipbreaker, this left-hand insert features R0.4 tiny corner radius to guarantee ultra-smooth machined surface. Equipped with PR930 stainless steel special MEGACOAT TiCN PVD coating substrate, it effectively suppresses chip adhesion and workpiece scratching during low-medium speed continuous cutting. Widely applied on Swiss sliding head automatic lathes and small CNC turning centers for medical hardware, miniature hydraulic fittings, electronic sensor sleeves and automotive micro parts precision internal & external finishing machining.

1. 5° positive rake sharp cutting edge design, extremely low cutting load, ideal for thin-wall deformation-sensitive small parts
2. Exclusive F micro-finish chipbreaker geometry, splits chips into short tiny fragments without scratching finished surface
3. PR930 TiCN thin PVD nano coating, outstanding anti-adhesion performance for stainless steel to eliminate built-up edge
4. Super-fine grain carbide substrate, high edge toughness to resist micro chipping under light interrupted finishing cuts
5. Standard WBGT08 positioning structure, high repeat positioning accuracy after insert replacement, consistent dimensional tolerance
6. Left-hand universal cutting structure, compatible with all STWB series small internal boring bars for mass production setup
7. Compact ultra-small size, suitable for deep tiny hole finishing inaccessible to conventional large boring inserts

• Full Model: WBGT080204L-F PR930
• Brand: Kyocera Precision Tools, Japan
• Insert Shape: 80° trigon (W-type)
• Rake Angle: 5° positive rake
• Inscribed Circle (IC): 4.76mm (08 size)
• Insert Thickness: 2.38mm (02 size)
• Cutting Corner Radius: R0.4mm
• Chipbreaker Style: F Micro Finishing
• Cutting Direction: Left Hand (L)
• Coating Technology: MEGACOAT TiCN PVD thin layer coating
• Material Grade: PR930 universal steel/stainless steel carbide
• Matching Tool: STWB series small internal boring bar for WBGT08 inserts
• Compatible Equipment: Swiss sliding head automatic lathe, small CNC lathe, economical precision turning machine
• Recommended Machining Type: Internal finishing boring, miniature outer diameter fine turning

Mild carbon steel, alloy structural steel, 304/316 austenitic stainless steel, low-alloy pre-hardened steel, thin-wall seamless steel tubing

Ultra-small hole internal finishing boring, miniature shaft outer diameter fine turning, thin-wall part low-deformation precision finishing, shallow inner surface facing

1. Hydraulic & pneumatic industry: miniature valve sleeves, tiny connector thin-wall inner hole precision finishing
2. Medical precision hardware: stainless steel thin tube micro assembly hole turning
3. Automotive electronics: small sensor sleeve, miniature wiring terminal inner bore finishing
4. Watch & micro machinery: tiny shaft thin-wall precision batch turning parts
5. General precision hardware: small bushing, miniature positioning sleeve high-accuracy internal boring production