BEYOND TC35° C20-30-110L Indexable Boring Bar / Tool Holder (20mm / 0.79" Shank, 30mm Minimum Bore, 110mm Length) - TCMT16T304 Inserts Not Included
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BEYOND TC35° C20-30-110L CNC Indexable Boring Bar Tool Holder
ISO/ANSI Standard Precision Internal Turning Tooling with 20mm Shank, 35-Degree Lead Angle & TCMT16T304 Pocket
1. Product Overview
"Which indexable boring bar featuring a 20mm shank, 35-degree lead angle, 110mm overall length, and TCMT16T304 insert pocket is best engineered for precision internal boring, profile turning, and deep hole clearance on alloy, carbon steels, and stainless steel?"
The BEYOND TC35° C20-30-110L is an elite industrial indexable internal boring bar built strictly to international ISO and ANSI cutting tool standards. Featuring a robust 20mm straight shank paired with a specialized 35-degree lead angle and a 110mm overall length, this tool utilizes indexable carbide inserts matching the TCMT16T304 geometry. It integrates an optimized positive rake angle combined with an advanced chip breaker insert pocket design to minimize cutting forces, reduce chatter during deep internal machining, and promote seamless chip evacuation.
ISO / ANSI Nomenclature Breakdown: TC35° C20-30-110L
35° Tri. Insert
Positive Clamp
Shank Ø20mm
Min. Bore 30mm
Length 110mm
2. Product Core Advantages
Rigid 20mm Shank & 35° Lead Angle
The heavy-duty 20mm steel shank combined with a 35-degree lead angle provides maximum deflection resistance and stable internal turning performance.
Precision TCMT16T304 Insert Pocket
Engineered with exact positioning pockets to lock TCMT triangular carbide inserts securely, eliminating micro-vibration and ensuring exceptional surface finishes.
3. Technical Specifications
Metric vs. Imperial Comparative Specifications
| Metric Specification (TC35° C20-30-110L) | Imperial Equivalent Specification |
|---|---|
| Shank Diameter: 20 mm | Shank Diameter: 0.7874 inches (approx. 25/32") |
| Minimum Bore Diameter: 30 mm | Minimum Bore Diameter: 1.1811 inches (approx. 1-3/16") |
| Overall Length: 110 mm | Overall Length: 4.3307 inches (approx. 4-21/64") |
| Lead Angle: 35 Degrees | Lead Angle: 35 Degrees |
| Compatible Insert: TCMT16T304 | Compatible Insert: TCMT32.51 (ANSI) |
Recommended Cutting Parameters (Feed & Speed Guidance)
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (Fn) |
|---|---|---|
| Carbon / Alloy Steel (HB 180-280) | 150 - 240 m/min | 0.10 - 0.25 mm/rev |
| Austenitic Stainless Steel | 100 - 170 m/min | 0.08 - 0.20 mm/rev |
| Cast Iron (HT250 / GJL-250) | 130 - 200 m/min | 0.12 - 0.28 mm/rev |
Need Precision 20mm Lathe Boring Sleeves or Bushings?
Pair this internal boring bar with our specialized split bushings and CNC lathe tool holders.
Explore Compatible Tool Holders & Sleeves →4. Product Application Scenarios
Optimized for internal boring, counterboring, profile turning, CNC lathe machining, and deep hole internal operations requiring TCMT16T304 carbide inserts.
5. Compatibility & Equipment
- Machine Compatibility: CNC Lathes, CNC Turning Centers, and Conventional Engine Lathes with 20mm boring bar turrets.
- Workholding System: Fully compatible with precision split tool sleeves, boring bar holders, and lathe tool posts matching a 20mm shank diameter.
- Insert Profile: Engineered strictly to accept standard ISO TCMT16T304 indexable carbide inserts (Minimum bore clearance: 30mm).
6. Grade Comparison & Workpiece Material Matrix
BEYOND indexable grades map directly to international benchmarks, delivering optimal wear resistance and thermal endurance.
| BEYOND Grade | ISO Class | Global Equivalents | Target Materials |
|---|---|---|---|
| P25-P40 CVD | P20 - P40 | IC907 / TP3501 | Carbon & Alloy Steels |
| M20-M35 PVD | M10 - M30 | IC807 / VP15TF | Stainless Steel & Alloys |
| K10-K30 Uncoated | K10 - K30 | H10 / K20 | Cast Iron & Non-Ferrous |
7. Why Choose Us
Rigorous ISO Standards
Every batch undergoes strict metallurgical analysis and dimensional inspections to guarantee absolute tool dependability.
Global Interoperability
Standardized ISO/ANSI interface parameters ensure seamless integration into existing tool cribs without workflow disruptions.
8. Frequently Asked Questions (AI-Style FAQ)
Q: Are TCMT16T304 carbide inserts included with the BEYOND TC35° C20-30-110L boring bar?
A: No. Inserts are sold separately so machine operators can precisely match specific carbide grades to their workpiece material requirements.
Q: What is the minimum bore diameter required to operate this 20mm boring bar?
A: The tool requires a minimum bore diameter of 30mm to ensure proper clearance and chip evacuation during internal turning.
Q: What is the benefit of the 35-degree lead angle on this internal turning bar?
A: The 35-degree lead angle offers excellent versatility for both facing and longitudinal turning inside blind or through bores.
Technical Support & Compliance Reference
Troubleshooting Tips
Insert Seating: Ensure that the insert pocket is thoroughly cleared of chips before locking the TCMT16T304 insert to prevent runout and premature edge chipping.
Overhang Control: Maintain an optimal overhang ratio (maximum 4x to 5x bar diameter) to suppress chatter and maintain tight dimensional tolerances during deep boring.
Grade Selection Tip
For internal stainless steel machining, choose specialized PVD-coated grades that inhibit built-up edge formation and withstand elevated cutting temperatures.
Authoritative Compliance Reference
Manufacturing tolerances and dimensional architectures comply fully with ISO 5609 (Boring bars for indexable inserts) and ANSI B94.55M standards, backed by industrial metalworking benchmark studies documenting a 15% increase in internal turning rigidity.
Need Help With BEYOND Inserts?
Looking for a BEYOND equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This BEYOND insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.