RTM500 ND DRO Bevel Gear Rolling Test Machine
- RTM500 ND Semi-automatic DRO Bevel Gear Rolling Test MachineDownload
| Model | Unit | RTM500 |
| Type | ND | |
| Max. diameter of workpiece (i=10:1 / i=1:1) | mm | Φ500 / 350 (20 / 14”) |
| Driving box | ||
| Distance from driving spindle center to driven spindle end face | mm | 130-270 (5.1-11”) |
| Diameter x depth of bigger end of taper hole | mm | 100x150 (3.9x5.9”) |
| Spindle taper | 1:20 | |
| Driven box | ||
| Distance from driving spindle center to driven spindle end face | mm | 120-320 (4.7-13”) |
| Max vertical movement of main spindle centerline (above / below machine centerline) | mm | 75 (3”) |
| Diameter of bigger end of taper hole | mm | Φ80 (3.2”) |
| Depth of bigger end of taper hole | mm | 120 (4.7”) |
| Spindle taper | 1:20 | |
| Total power consumption | kW | 6.2 |
| Main motor power | kW | 4 |
| Hydraulic motor power | kW | 2.2 |
| Overall dimensions | mm | 2200x1800x1750 |
| Packing dimensions | mm | 2750x1950x2140 |
| Net weight | kg | 3800 |
| Gross weight | kg | 4500 |
1. RTM500 ND is an auxiliary device for BG260 bevel gear generating machine used to inspect the contact accuracy, gear backlash, mounting distance, noise of various bevel gear pair of 90° crossed axis angle under low braking load.
2. Driven spindle box has bending auxiliary support and locking mechanism, which increases rigidity, reduces vibration and noise and guarantees reliability.
3. The drive screw for driving spindle box is double-nut preloaded screw.
4. Driving spindle speed is infinitely variable.
5. Electric system adopts PLC control.
6. Driven spindle adopts adjustable hydraulic band-type brake load mechanism.
1. RTM500 ND is an auxiliary device for BG260 bevel gear generating machine used to inspect the contact accuracy, gear backlash, mounting distance, noise of various bevel gear pair of 90° crossed axis angle under low braking load.
2. Driven spindle box has bending auxiliary support and locking mechanism, which increases rigidity, reduces vibration and noise and guarantees reliability.
3. The drive screw for driving spindle box is double-nut preloaded screw.
4. Driving spindle speed is infinitely variable.
5. Electric system adopts PLC control.
6. Driven spindle adopts adjustable hydraulic band-type brake load mechanism.
| Model | Unit | RTM500 |
| Type | ND | |
| Max. diameter of workpiece (i=10:1 / i=1:1) | mm | Φ500 / 350 (20 / 14”) |
| Driving box | ||
| Distance from driving spindle center to driven spindle end face | mm | 130-270 (5.1-11”) |
| Diameter x depth of bigger end of taper hole | mm | 100x150 (3.9x5.9”) |
| Spindle taper | 1:20 | |
| Driven box | ||
| Distance from driving spindle center to driven spindle end face | mm | 120-320 (4.7-13”) |
| Max vertical movement of main spindle centerline (above / below machine centerline) | mm | 75 (3”) |
| Diameter of bigger end of taper hole | mm | Φ80 (3.2”) |
| Depth of bigger end of taper hole | mm | 120 (4.7”) |
| Spindle taper | 1:20 | |
| Total power consumption | kW | 6.2 |
| Main motor power | kW | 4 |
| Hydraulic motor power | kW | 2.2 |
| Overall dimensions | mm | 2200x1800x1750 |
| Packing dimensions | mm | 2750x1950x2140 |
| Net weight | kg | 3800 |
| Gross weight | kg | 4500 |
Knee Type Milling Machine: Precision Versatility for Industrial Manufacturing
What is a Knee Type Milling Machine?
A knee type milling machine is a fundamental machine tool distinguished by its vertically adjustable worktable mounted on a "knee" casting. This knee moves precisely up and down a fixed column via a screw mechanism, enabling accurate Z-axis positioning crucial for diverse milling operations.
Working Principle
The core principle involves a rotating milling cutter removing material from a workpiece secured to the table. The adjustable knee mechanism allows controlled vertical movement (Z-axis), while the table provides longitudinal (X-axis) and transverse (Y-axis) travel. This 3-axis control facilitates complex machining of flat, angular, and contoured surfaces.
Key Applications
- Tool & Die Making: Precision molds, jigs, fixtures
- Prototyping: Rapid part development
- Maintenance Shops: Equipment repair & part fabrication
- General Machining: Slotting, drilling, facing, keyway cutting
- Aerospace & Automotive: Component manufacturing
Distinctive Features & Advantages
- Vertical Adjustability: Knee movement enables quick workpiece height changes
- Rigid Construction: Robust cast iron frame ensures stability
- Manual & CNC Options: Traditional control or computer numerical precision
- Turret Design (Common): Swiveling milling head for multi-angle machining
- Wide Workpiece Compatibility: Handles various sizes and shapes
Primary Classifications
- Vertical Knee Mill: Spindle axis perpendicular to table (most common)
- Horizontal Knee Mill: Spindle axis parallel to table (for heavy stock removal)
- Universal Knee Mill: Table swivels for complex angular cuts
- Turret Mill: Head rotates on turret for flexible positioning
Main Components
- Base & Column: Primary support structure
- Knee: Vertically moving saddle supporting the table
- Saddle & Table: Hold and position the workpiece (X/Y axes)
- Milling Head: Houses spindle, motor, and quill (Z-axis)
- Arbor/Spindle: Rotating shaft holding cutting tools
- Controls: Manual handwheels or CNC interface
Evolution & Industry Significance
Since their development in the late 19th century, knee-and-column mills revolutionized machining. The iconic Bridgeport design (1938) popularized the turret style. While CNC machining centers dominate high-volume production, knee mills remain indispensable for flexibility, ease of use, and cost-effectiveness in job shops, schools, and repair facilities worldwide.
Fortune Pacific: Your Knee Mill Solution
At Fortune Pacific, we engineer durable, high-precision knee type milling machines for demanding applications. Explore our range of vertical mills, horizontal mills, and CNC-ready models designed to enhance your workshop's capabilities. Discover the ideal machine for your metalworking, prototyping, or toolmaking needs.
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