Solid Tungsten Carbide 55° Rhombus Diamond Carbide Insert Shim with High Wear Resistance for CNC Lathe Tools

This D-type diamond cemented carbide insert shim is a wear-resistant spare part for 55° rhombus DCMT indexable turning inserts, packed in standard red 10pcs plastic storage box . Made of integral solid carbide with ultra-high hardness, it acts as a buffer support between carbide insert and steel tool holder, isolating cutting heat and absorbing impact load during continuous turning, effectively preventing tool seat abrasion and thermal deformation. It is widely matched with SDJCR/SDNCN series lathe tool holders for external turning and internal boring on carbon steel, alloy steel and stainless steel.

• Product Name: 55° Diamond Carbide Insert Shim (D-type Shim)
• Packing Box: Standard red split plastic box, 10 pieces per box
• Material: Solid cemented carbide, HRA 90~92 high hardness
• Shape: 55° rhombus (Diamond), single center positioning hole, bottom locating boss
• Matching Insert: DCMT0702 / DCMT11T3 / DCMT1505 series turning inserts
• Matching Tool Holder: SDJCR, SDNCN D-type lathe tool holders
• Core Function: Heat insulation, anti-wear support, prevent insert shifting & tool seat damage
• Surface Finish: Precision ground flat contact surface, tight fit with insert bottom
• Warehouse Code Mark: SPARES 20260400 (internal inventory serial number only)

• Carbon steel: 1018, 1045, A3 mild steel
• Alloy structural steel: 40Cr, 4140, pre-hardened mold steel
• Stainless steel: 304, 316, 420 stainless alloys
• Grey cast iron & ductile iron

• External diameter roughing & finishing turning on CNC lathe
• Internal hole boring, small precision component step turning
• Batch mass production of auto fittings, hydraulic parts, mold accessories
• Long-term continuous heavy cutting where tool holder protection is required
• Precision machining requiring stable insert positioning and consistent dimensional tolerance

• Solid carbide substrate: Superior wear and heat resistance compared to steel shims, no deformation under high cutting temperature
• Precise bottom locating boss: Perfectly locks DCMT inserts to avoid vibration shifting during cutting
• Thermal isolation performance: Blocks high-temperature heat transfer to tool holder, extend tool holder service life greatly
• Low replacement cost: Only replace shim instead of whole tool holder after wear, reduce long-term tool expense
• Universal industry standard size: Interchangeable with ZCCCT, S, Deskar D-type turning tool systems
• Uniform precision grinding: Consistent dimensional accuracy for automated batch production