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BEYOND S20R-MCKNR12 (0.787" / 20mm Shank) Indexable Internal Boring Bar | Right-Hand CNC Lathe Turning Tool Holder
$21.95 USD
BEYOND S20R-MCKNR12 Right-Hand Indexable Internal Boring Bar (20mm Shank) for High-Rigidity 75° CNC Lathe Heavy Roughing and Internal Turning Operations ⚠️ INDUSTRIAL PACKAGING NOTICE: The indexable carbide insert shown mounted...
BEYOND S32T-MCKNR12 (32mm / 1.260" Shank) Indexable Internal Boring Bar | Right-Hand 75° SCEA CNC Lathe Heavy Duty CNMG1204 Turning Tool Holder
$52.48 USD
BEYOND S32T-MCKNR12 Right-Hand Indexable Internal Boring Bar (32mm Shank) for Heavy-Duty 75° SCEA CNC Lathe Rough Boring, Interrupted Cuts, and High-Stability CNMG1204 Turning Operations ⚠️ INDUSTRIAL PACKAGING NOTICE: The indexable...
BEYOND S32T-MCKNL12 (32mm / 1.260" Shank) Indexable Internal Boring Bar | Right-Hand 75° SCEA CNC Lathe Heavy Duty CNMG1204 Turning Tool Holder
$52.48 USD
BEYOND S32T-MCKNL12 Right-Hand Indexable Internal Boring Bar (32mm Shank) for Heavy-Duty 75° SCEA CNC Lathe Rough Boring, Interrupted Cuts, and High-Stability CNMG1204 Turning Operations ⚠️ INDUSTRIAL PACKAGING NOTICE: The indexable...
BEYOND S25S-MCKNR12 Internal Turning Tool Holder 25mm (0.984 inch) Shank for CNMG 120408 Inserts
$27.98 USD
BEYOND S25S-MCKNR12 Right-Hand Indexable Internal Boring Bar (25mm Shank) for High-Rigidity 75° CNC Lathe Heavy-Duty Internal Roughing, Longitudinal Boring, and Counterboring Operations ⚠️ INDUSTRIAL PACKAGING NOTICE: The indexable carbide insert...
BEYOND S25S-MCKNL12 (25mm / 0.984" Shank) Indexable Internal Boring Bar | Left-Hand 75° CNC Lathe Heavy Rough Boring Tool Holder
$30.78 USD
BEYOND S25S-MCKNL12 Left-Hand Indexable Internal Boring Bar (25mm Shank) for High-Rigidity 75° CNC Lathe Heavy-Duty Internal Roughing, Longitudinal Boring, and Counterboring Operations ⚠️ INDUSTRIAL PACKAGING NOTICE: The indexable carbide insert...
BEYOND S20R-MCKNL12 (0.787" / 20mm Shank) Indexable Internal Boring Bar | Left-Hand CNC Lathe Turning Tool Holder
$21.95 USD
BEYOND S20R-MCKNL12 Left-Hand Indexable Internal Boring Bar (20mm Shank) for High-Rigidity 75° CNC Lathe Heavy Roughing and Internal Turning Operations ⚠️ INDUSTRIAL PACKAGING NOTICE: The indexable carbide insert shown mounted...
BEYOND MCKNR/L CNC Boring Bar – Steel Shank, M Clamp, 75° Cutting Angle, CNMG Inserts
The BEYOND MCKNR/L external turning boring bar series provides precise and stable CNC machining. Built with a rigid steel shank, M-type clamp with lock pin, and a 75° cutting edge angle (K), this series is compatible with CNMG12 inserts for medium to finishing operations on steel, stainless steel, alloy steel, and cast iron.
Key Features
- Steel shank (ISO “S” type) for maximum rigidity
- M-type clamping system (Clamp + Lock Pin)
- Compatible with CNMG12xx diamond inserts
- 75° cutting edge angle (ISO code K)
- 0° negative relief angle (N)
- Right-hand (R) and left-hand (L) versions available
- ISO-standard coding ensures global interchangeability
ISO Code Explanation
| Symbol | Meaning |
|---|---|
| S | Steel shank |
| 20 / 25 / 32 / 40 / 50 | Bar diameter (mm) |
| R / S / T / U | Bar length: R=200mm, S=250mm, T=300mm, U=350mm |
| M | Clamp + Lock Pin clamping system |
| C | Insert shape: 80° diamond (CNMG) |
| K | Cutting edge angle: 75° |
| N | Relief angle: 0° negative |
| R / L | Right-hand / Left-hand tool |
| 12 | Insert cutting-edge length for CNMG12 series |
Available Models & Specifications
| Model | Shank Diameter (mm) | Overall Length (mm) | Insert Type | Clamping | Hand |
|---|---|---|---|---|---|
| S20R-MCKNR12 | 20 | 200 | CNMG12xx | M Clamp + Lock Pin | Right |
| S20R-MCKNL12 | 20 | 200 | CNMG12xx | M Clamp + Lock Pin | Left |
| S25S-MCKNR12 | 25 | 250 | CNMG12xx | M Clamp + Lock Pin | Right |
| S25S-MCKNL12 | 25 | 250 | CNMG12xx | M Clamp + Lock Pin | Left |
| S32T-MCKNR12 | 32 | 300 | CNMG12xx | M Clamp + Lock Pin | Right |
| S32T-MCKNL12 | 32 | 300 | CNMG12xx | M Clamp + Lock Pin | Left |
| S40T-MCKNR12 | 40 | 300 | CNMG12xx | M Clamp + Lock Pin | Right |
| S40T-MCKNL12 | 40 | 300 | CNMG12xx | M Clamp + Lock Pin | Left |
| S50U-MCKNR12 | 50 | 350 | CNMG12xx | M Clamp + Lock Pin | Right |
| S50U-MCKNL12 | 50 | 350 | CNMG12xx | M Clamp + Lock Pin | Left |
Applications
- External turning
- Profiling
- Finishing operations
- General CNC lathe machining
Recommended Keywords
MCKNR boring bar, MCKNL boring bar, CNMG insert toolholder, 75-degree turning bar, CNC external turning bar, clamp and lock pin toolholder, steel shank boring bar, BEYOND MCKNR, CNMG12 insert holder, ISO turning toolholder, CNC lathe toolholder