Overview
The Big Daishowa P50T-2CH11 pullstud bolt is a precision-engineered retention knob designed for machine tool spindles requiring reliable tool holder clamping and rapid tool changes. This MEGA-series component delivers the holding force and durability critical for high-speed milling, multi-axis machining, and heavy cutting operations. The part is sized specifically for Okuma and Howa machine centers with CV50 spindles and compatible with various CAT and coolant-through-spindle configurations.
Key Features
- H13 tool steel construction with 30% strength increase from high-nickel alloy content
- Roll-formed threads for superior thread quality and fatigue resistance versus cut-thread alternatives
- Lead-free composition ensuring safe handling and environmental compliance
- Precision-engineered dimensions compatible with Okuma CV50 and Howa spindle systems
- Designed to withstand high-speed centrifugal forces and vibration in production environments
Technical Specifications
| Manufacturer | Big Daishowa (Big Kaiser) |
| Model Number | P50T-2CH11 |
| Type | MEGA Pullstud Bolt / Retention Knob |
| Material | H13 Tool Steel with High-Nickel Alloy |
| Application | Machine Tool Spindle Clamping |
| Compatible Spindle | Okuma CV50, Howa CV50, CAT interface |
| Coolant Compatibility | Coolant-through-spindle capable |
| Thread Style | Roll-Formed |
| Condition | New in Box |
| Weight | 1.23 lbs |
Typical Applications
- High-speed CNC milling centers and multi-axis machining platforms
- Production tool changer systems requiring rapid spindle release
- Heavy cutting operations on ferrous and non-ferrous materials
- Precision aerospace and automotive component manufacturing
- Job shops requiring reliable tool holder retention on OKuma/Howa equipment
Compatibility & Replacements
Compatible With
- Okuma machine centers with CV50 spindles
- Howa machine tools with CV50 spindle interface
- Coolant-through-spindle systems (verify machine specifications)
- CAT tool holder interfaces
- MEGA-series spindle mounting systems
Replaces / Drop-In Replacement For
- OEM Okuma P50T-2CH11 pullstud bolts
- Similar P50T series retention knobs (verify exact spindle specifications before substituting)
Works With
- Okuma OSP machine control systems
- MEGA pullstud bolt series accessories
- Standard CAT and coolant-through-spindle tool holders
- Big Daishowa retention force measurement devices (Dyna Force)
