JET Vertical Mill Package Applications
- High-accuracy face milling, precision pocketing, slotting, and multi-axis profiling
- Production tool and die manufacturing, custom mold machining, and industrial prototyping
- Heavy-duty boring, deep-hole drilling, and precision tapping across a 660 lb table load limit
- Compound-angle machining utilizing 45° forward/backward tilt and full 90° left/right head rotation
A complete, production-ready machining cell engineered for commercial fabrication facilities, aerospace shops, and heavy maintenance environments requiring advanced digital control.
Technical Specifications
| Stock Number | JT9-690087 (Model JTM-4VS) |
|---|---|
| Machine Type | Vertical Knee Milling Machine Package |
| Motor Power | 3 HP |
| Electrical Configuration | 230V / 460V, Three-Phase (3Ph) |
| Spindle Speed Control | Variable Speed Pulley Drive |
| Spindle Speed Range | 60 RPM Minimum – 4,200 RPM Maximum |
| Spindle Taper Size | R-8 |
| Table Dimensions (L x W) | 49" x 9" (with 2-1/2" T-Slot Centers) |
| Work Table Load Capacity | 660 lbs |
| Axis Travels | Longitudinal (X): 34" • Cross (Y): 12" • Knee (Z): 14-1/2" • Ram: 14-1/2" |
| Quill Properties | 3-3/8" Chromed Diameter • 5" Spindle Travel |
| Spindle Power Feed Rates | 3 Stages: .0015", .0030", .0060" IPR |
| Included System Accessories | Newall 2-Axis DRO • X-Axis Power Feed • Tolerance Test Sheet |
| Overall Dimensions (L x D x H) | 66" x 63" x 85" |
Performance & Bundle Integration Features
- Integrated Newall 2-Axis DRO provides highly accurate, sealed digital tracking, drastically reducing operator layout times and eliminating manual backlash calculations.
- Pre-Installed X-Axis Power Feed delivers automated, smooth table travel to optimize chip loads and ensure highly consistent surface finishes.
- Certified Meehanite® Cast Iron Body supplies immense structural dampening properties to ensure clean, chatter-free processing under high mechanical feed rates.
- Three-Stage Power Downfeed System incorporates an automatic stop mechanism to maximize user precision and ease repetitive deep boring depth workflows.
- Precision Hardened & Ground Table/Ways deliver smooth, unyielding slide movements across all travel axes to consistently hold strict mechanical tolerances.
- Internally Cooled Spindle Head Housing dissipates localized thermal energy efficiently to maintain exact bearing preload configurations during continuous runs.
- One-Shot Manual Lubrication Block channels critical lubrication immediately to multiple friction paths on the carriage and table for accelerated daily maintenance.
Why Invest in This JET Milling Package
- Turnkey assembly arrives completely equipped with a premium Newall DRO and X-Axis power feed module to maximize immediate shop throughput.
- Dual-voltage 3-Phase configuration seamlessly adapts into standard commercial facility power distribution setups.
- Meehanite structural foundation protects your initial capital investment against long-term warping and geometric wear.
- Backed by the industry-leading JET 2-Year Warranty and includes a certified factory layout Tolerance Test Sheet to guarantee strict quality verification.
This heavy-duty JET Knee Mill bundle pairs traditional machining mass with digital precision controls and automated feeds, establishing a highly efficient, long-term asset for professional manufacturing environments.
Official Manual: Download the JET JTM-4VS Product Manual
Official Manual: Download the JET JTM-4VS Product Manual
