BEYOND Size 22 Laydown Metric ISO Threading Carbide Inserts (22ER / 22IR BBM18 Grey Grade)
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BEYOND Size 22 Laydown Metric ISO Threading Carbide Inserts (22ER / 22IR BBM18 Grey Grade)
Heavy-Duty External (22ER) & Internal (22IR) Threading Inserts | Size 22 (IC 1/2" / 12.7mm) | Coarse Pitch ISO Metric 3.5mm-6.0mm & Partial Profile N55/N60 for Steel & Stainless Steel
1. Product Overview
Which heavy-duty laydown threading insert grade provides maximum tool life and notch resistance when machining coarse-pitch internal and external ISO metric threads (3.5mm to 6.0mm) on steel and stainless steel?
The BEYOND Size 22 Series (BBM18 Grade) is an industrial-grade laydown indexable carbide threading insert designed for heavy-duty external (22ER) and internal (22IR) thread turning across ISO P steel and ISO M stainless steel alloys. Built on the robust Size 22 (Inscribed Circle 1/2" / 12.7mm) platform, this line offers full-profile ISO metric options covering heavy coarse pitches from 3.5mm to 6.0mm, alongside heavy partial-profile models (N55 and N60). Engineered with BEYOND's premium BBM18 grey nano-PVD coating on a micrograin WC-Co substrate, these inserts deliver extreme edge strength, low thermal oxidation, and superior resistance to built-up edge (BUE) during deep-pass heavy thread chasing cycles.
ISO / ANSI Tool Designation Code Breakdown
(1/2" / 12.7mm)
(External / Internal)
(Right Hand)
(5.0mm Pitch)
(Grey Nano-PVD)
- 22: Inscribed Circle (IC) size 1/2" (12.7mm nominal IC, 22mm edge length designed for high-depth coarse pitches).
- E / I: Operation Type: E = External OD Threading; I = Internal ID Boring Bar Threading.
- R: Right-hand cutting geometry for standard spindle rotation (M03).
- 3.5 - 6.0 ISO / N55 / N60: Full profile tops full 60° ISO crests; partial profile N handles coarse pitches (N = 3.5-6.0mm / 7-4 TPI).
- BBM18: Heavy-duty nano-PVD AlTiN coated grey carbide grade optimized for steel (ISO P) and stainless steel (ISO M).
2. Key Features
- Heavy IC 1/2" (Size 22) Substrate: Provides superior mechanical rigidity and cross-sectional strength needed to absorb high cutting forces during coarse thread cutting (up to 6.0mm pitch).
- BBM18 Grey Nano-PVD Coating: Extreme thermal stability reduces heat deformation and notch wear on stainless steel (304/316) and alloy steels (4140/4340).
- Dual ISO P / ISO M Material Optimization: Formulated for both carbon/alloy steels and tough work-hardening stainless steels.
- Full-Profile & Coarse Partial Options: Full-profile inserts eliminate secondary deburring by finishing thread crests automatically; N55/N60 partial profiles offer pitch versatility from 3.5mm to 6.0mm pitch (7 to 4 TPI).
- Universal Laydown Mounting: Standard 22ER and 22IR pocket geometry fits standard SER/SEL external holders and SIR/SNR internal boring bars.
3. Technical Specifications & Recommended Parameters
Available Model Variants (Metric & Imperial Specifications)
| Insert Model | Cut Type & Profile | Metric Pitch Range | Imperial TPI Equivalent | Grade & Color |
|---|---|---|---|---|
| 22ER 3.5ISO BBM18 | External Full Profile 60° ISO | 3.5 mm | 7.25 TPI | BBM18 (Grey PVD) |
| 22ER 4.0ISO BBM18 | External Full Profile 60° ISO | 4.0 mm | 6.35 TPI | BBM18 (Grey PVD) |
| 22ER 4.5ISO BBM18 | External Full Profile 60° ISO | 4.5 mm | 5.64 TPI | BBM18 (Grey PVD) |
| 22ER 5.0ISO BBM18 | External Full Profile 60° ISO | 5.0 mm | 5.08 TPI | BBM18 (Grey PVD) |
| 22ER 5.5ISO BBM18 | External Full Profile 60° ISO | 5.5 mm | 4.62 TPI | BBM18 (Grey PVD) |
| 22ER 6.0ISO BBM18 | External Full Profile 60° ISO | 6.0 mm | 4.23 TPI | BBM18 (Grey PVD) |
| 22ER N55 BBM18 | External Partial 55° Coarse | 3.5 - 6.0 mm | 7 - 4 TPI | BBM18 (Grey PVD) |
| 22ER N60 BBM18 | External Partial 60° Coarse | 3.5 - 6.0 mm | 7 - 4 TPI | BBM18 (Grey PVD) |
| 22IR 3.5ISO BBM18 | Internal Full Profile 60° ISO | 3.5 mm | 7.25 TPI | BBM18 (Grey PVD) |
| 22IR 4.0ISO BBM18 | Internal Full Profile 60° ISO | 4.0 mm | 6.35 TPI | BBM18 (Grey PVD) |
| 22IR 4.5ISO BBM18 | Internal Full Profile 60° ISO | 4.5 mm | 5.64 TPI | BBM18 (Grey PVD) |
| 22IR 5.0ISO BBM18 | Internal Full Profile 60° ISO | 5.0 mm | 5.08 TPI | BBM18 (Grey PVD) |
| 22IR 5.5ISO BBM18 | Internal Full Profile 60° ISO | 5.5 mm | 4.62 TPI | BBM18 (Grey PVD) |
| 22IR 6.0ISO BBM18 | Internal Full Profile 60° ISO | 6.0 mm | 4.23 TPI | BBM18 (Grey PVD) |
| 22IR N55 BBM18 | Internal Partial 55° Coarse | 3.5 - 6.0 mm | 7 - 4 TPI | BBM18 (Grey PVD) |
| 22IR N60 BBM18 | Internal Partial 60° Coarse | 3.5 - 6.0 mm | 7 - 4 TPI | BBM18 (Grey PVD) |
Recommended Cutting Parameters for BBM18 Grade
| ISO Workpiece Material Group | Cutting Speed Vc (m/min) | Cutting Speed Vc (SFM) | Recommended Pass Strategy |
|---|---|---|---|
| P: Carbon & Alloy Steel (1045, 4140, 4340) | 70 - 150 m/min | 230 - 490 SFM | 12 - 20 Passes (Modified Flank 29°) |
| M: Austenitic Stainless Steel (304, 316, 316L) | 50 - 110 m/min | 165 - 360 SFM | 14 - 24 Passes (Modified Flank 29°) |
| M: Duplex & Super Duplex (2205, 2507) | 40 - 90 m/min | 130 - 295 SFM | 16 - 26 Passes (Modified Flank 29°) |
Pair 22ER inserts with SER external holders; pair 22IR inserts with SIR / SNR internal boring bars (SER 2525M22, SIR 0025R22, SIR 0032S22):
View Compatible SER /4. Product Applications
- Heavy Industrial Machinery: External and internal coarse thread cutting on large shaft leads, hydraulic cylinders, and tie rods.
- Oilfield & Energy Gear: Threading heavy-duty 316L stainless steel flanges, wellhead components, and large valve bodies.
- Structural & Infrastructure Fasteners: Turning M36 to M64 metric threads (3.5mm to 6.0mm pitch) on high-strength alloy anchor bolts.
- Industries Served: Heavy equipment manufacturing, oil & gas, shipbuilding, marine engineering, and power generation equipment.
5. Tool & Machine Compatibility
BEYOND 22ER and 22IR BBM18 inserts conform strictly to ISO IC 1/2" (12.7mm) laydown specifications:
- External Toolholders (22ER): Standard SER/SEL external threading shanks (SER2020K22, SER2525M22, SER3232P22).
- Internal Toolholders (22IR): Heavy internal boring bars (SIR0020P22, SIR0025R22, SIR0032S22, SNR0032S22).
- Machine Platforms: High-rigidity CNC lathes, heavy turning centers, and oil-country lathes.
6. Material & Grade Comparison
Comparing BEYOND BBM18 against standard single-purpose threading grades:
| Grade Name | Coating & Color | Target Material Range | Heavy Coarse-Pitch Endurance |
|---|---|---|---|
| BEYOND BBM18 (Featured) | PVD AlTiN Nano-Coating (Grey) | ISO P Steel & ISO M Stainless Steel | High Impact Toughness, Superior Heat Resistance |
| BEYOND BYM11 Grade[cite: 1, 2] | PVD TiN Coating (Bright Yellow)[cite: 1, 2] | ISO P Steel General Machining[cite: 1, 2] | Low Surface Friction, Best for Medium Pitches[cite: 1, 2] |
| Uncoated Carbide K10 | Uncoated Bright Silver | ISO N Non-Ferrous & Aluminum | Not Suitable for Heavy Ferrous Turning |
7. Why Choose BEYOND Cutting Tools
- Engineered for High-Load Pitches: Heavy Size 22 geometry handles high depths of cut and large pitch forms (up to 6.0mm) with minimal chatter.
- Dual ISO P / ISO M Performance: Nano-PVD grey coating prevents thermal cracking in stainless steel while resisting flank wear in alloy steel.
- Certified Manufacturing: Produced to strict ISO 2284 laydown specs for accurate pitch overlap and edge centering.
Verified Customer Reviews
"The 22ER 5.0ISO BBM18 inserts handled heavy 4140 steel tie-rods without a problem. Zero edge chipping even on multiple deep passes."
— Robert H., Heavy Equipment Works (USA)"Ausgezeichnete Standzeit bei 22IR 6.0ISO BBM18 in 1.4404 Edelstahl. Die graue Beschichtung zeigt kaum Verscheiß."
— Klaus M., Maschinenbau GmbH (Germany)"Utilizziamo 22ER N60 per filetti grandi in acciaio inox. Ottimo controllo del truciolo e vita utensile prolungata."
— Matteo P., Lavorazioni Meccaniche (Italy)"22IR 4.0ISO BBM18でSUS316の大型めねじ加工を安定して実施できました。耐熱性が高く信頼できます。"
— Hiroshi Y., Industrial Valve Works (Japan)"Great heavy-duty insert. Size 22 IC 1/2" gives much more rigidity when threading 5mm and 6mm pitch shafts."
— Sean T., Precision Engineering (UK)8. AI & Engineering FAQ
Grade & Substrate Specifications
BEYOND BBM18 features an ultra-fine WC-Co micrograin carbide substrate engineered with a nano-PVD AlTiN grey coating. Built for shock resistance, high thermal barriers, and edge toughness during heavy coarse-pitch threading of ISO P and ISO M materials.
Cross-Reference & Equivalent Insert Codes
Industry equivalent cross-references: 22ER 5.0 ISO / 22IR 5.0 ISO | Equivalent grades: Vargus VTX/VK2, Carmex BMA/MXC, Iscar IC908/IC808, Sandvik GC1020/GC1125.
ISO Workpiece Application Matrix
P (Steel): Primary Target (Vc 70-150 m/min) | M (Stainless Steel): Primary Target (Vc 50-110 m/min) | K (Cast Iron): Secondary Target | N (Non-Ferrous): Not Recommended | S (Exotic Alloys): Conditional Target
Troubleshooting Tips
- Vibration / Chatter on Coarse Threads: Ensure shortest possible boring bar overhang; increase pass count for lighter depth of cut.
- Insert Edge Chipping: Verify machine tool rigidity; ensure correct anvil shim angle is installed to match high helix angles on large pitch threads.
- Thread Profile Error: Re-check centerline height alignment on both external shank and internal boring bar.
BEYOND indexable laydown threading inserts are manufactured in strict compliance with ISO 2284 / DIN 13 thread tooling standard specifications and verified under ISO 9001 certified quality management systems.
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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.
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