Hollow Rotary Tables,Cam Indexers,Planetary Gear Reducers 
Hypoid gear hollow rotary tables are a specialized type of rotary table used in various industrial applications. These tables combine the features of a hypoid gear and a hollow rotary table to provide precise, high-torque rotation for a wide range of tasks.
What Is a Hypoid Gear Hollow Rotary Table?
A hypoid gear hollow rotary table is a precision indexing and positioning device that combines a hypoid gear drive with a large-diameter hollow through-bore output table, delivering high torque, low backlash rotary motion for workpiece positioning, multi-axis machining, and automated assembly operations. The hypoid gear set comprises an offset hypoid pinion meshing with a large-diameter hypoid ring gear integrated into the table output flange. The offset axis between pinion and ring gear allows the input motor to mount below or beside the table plane, minimizing overall assembly height and enabling flat, low-profile table configurations impossible with worm gear or bevel gear alternatives.
Here are the key aspects of hypoid gear hollow rotary tables:
Hypoid Gear Design: Hypoid gears are a type of spiral bevel gear where the axis of rotation is offset from the axis of the input shaft.
This offset arrangement allows for a more compact and efficient power transmission compared to traditional bevel gears.
The hypoid gear design in these rotary tables provides high torque capacity and smooth, precise rotation.
Hollow Center: The rotary table has a hollow center, allowing for the passage of cables, pipes, or other components through the table’s axis of rotation.
This feature enables the integration of the rotary table into complex machinery or setups where access through the center is required.
The table provides Hypoid Gear Hollow Rotary Tables with visuals and detailed engineering specifications.
Hypoid Gear Hollow Rotary Platforms | |||||||
| Model No | TMR60-30-M TMR60-30-B | TMR120-30-M TMR120-30-B | TMR165-30-M TMR165-30-B | TMR240-30-M | |||
| Motor type | 50/100 W servo motor 42 stepper motor | 200/400W servo 57/86 stepper motor | 750W/1000W servo 86/110 stepper motor | 1000/1500W servo motor | |||
| Ratio (i) | 30 | 30 | 30 | 30 | |||
Bearing type | Cross roller bearing | Tapered roller bearing | Tapered roller bearing | Tapered roller bearing | |||
| Allowable axis torque (N.m) | 35 | 120 | 240 | 500 | |||
| Allowable moment torque (N.m) | 45 | 240 | 480 | 900 | |||
| Allowable Plate Speed (R/Min) | 200 | 200 | 200 | 200 | |||
| Max overturning torque (N.m) | 60 | 240 | 460 | ||||
| Max radial force (N) | 400 | 9000 | 18000 | ||||
| Max axial force (N) | 400 | 9000 | 18000 | ||||
| Allowable axial load | 400 | 3000 | 7000 | 12000 | |||
| Torsion Rigidity | 21 Nm/arcmin | 48 Nm/arcmin | 76 Nm/arcmin | ||||
| Positioning Accuracy | ±0.5 arc/min | ±0.5 arc/min | ±0.5 arc/min | ±0.5 arc/min | |||
| Repeat Positioning | ≤10 arc/sec | ≤10 arc/sec | ≤10 arc/sec | ≤10 arc/sec | |||
| Platform Runout | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | |||
| Radial runout | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | |||
| Platform concentricity | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | |||
| Platform Parallelism | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | |||
| Backlash | 0 | 0 | 0 | 0 | |||
| Life (Hours) | >20,000 | >20,000 | >20,000 | >20,000 | |||
| Lubrication method | Synthetic grease Lubricant | ||||||
| Protection Grade | IP50 | IP50 | IP50 | IP50 | |||
Options | |
| Driver and Cable | Driver and cable provided if Motor provided by Tallman Robotics Limited (Usually, we configure Delta, Inovance ) |
| Face rotating Plate | Provided if needed.(Drawing provided by the clients) |
| Sensors | Photoelectric sensor, brackets, sensor plates, screws are for options. |
Comparison: Hypoid vs Worm Gear Hollow Rotary Tables
| Performance Parameter | Hypoid Gear | Worm Gear |
|---|---|---|
| Mechanical Efficiency | 85–92% | 50–72% |
| Thermal Power Rating | High | Low |
| Backlash | 3–12 arcmin | 5–20 arcmin |
| Tooth Contact Ratio | 2.0–3.5 | 1.5–2.5 |
| Tilting Moment Capacity | High | Moderate |
| Operating Temperature | Low | High |
| Lubricant Service Life | Long | Short |
| High Duty Cycle Suitability | Excellent | Limited |
| Self-Locking | Partial | Full (high ratio) |
| Noise Level | Low | Moderate |
| Cost | Higher | Lower |
Industry Applications with Hypoid Gear Hollow Rotary Tables
Automated Welding Systems
Pipe welding positioners, pressure vessel circumferential seam welding systems, and structural fabrication turntables use hypoid gear hollow rotary tables with welding rotary ground connections and shielding gas lines routed through the hollow bore. High efficiency reduces thermal buildup during continuous duty welding cycles. Partial self-locking reduces holding brake wear during tack welding positioning stops.
Semiconductor and Electronics Manufacturing
Wafer inspection systems, flat panel display edge processing machines, and electronic component laser marking systems use compact precision hypoid gear hollow rotary tables with bore diameters from 50 mm to 150 mm. Sub-arcsec repeatability from direct output encoder feedback suits die-level alignment accuracy requirements. Clean room compatible surface finishes and lubricant-free bore interior surfaces prevent particle contamination of sensitive electronic workpieces.
FAQs about Hypoid Gear Hollow Rotary Tables
- How does hypoid gear offset affect rotary table profile height?
The hypoid pinion offset axis sits below the ring gear centerline. This allows the input motor to mount below the table plane entirely, eliminating the motor height contribution to overall table stack height. Worm gear tables require the worm shaft to mount at table mid-height, adding worm shaft diameter plus bearing housing dimensions to total height. Hypoid gear tables achieve 30–50% lower profile heights than equivalent worm gear tables, critical in low-clearance 5-axis machining center trunnion configurations. - What causes hypoid gear hollow rotary table positioning drift over time?
Gradual tooth flank micropitting increases effective backlash beyond initial specification. Output bearing wear raises radial and axial play above preloaded baseline values. Lubricant degradation reduces oil film thickness, accelerating both gear and bearing surface fatigue. Tables in high-cycle servo applications accumulate contact fatigue damage faster than low-cycle positioning applications. Measure backlash and output bearing play annually. Replace units when backlash exceeds twice the original specification.
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