Hollow Rotary Tables,Cam Indexers,Planetary Gear Reducers 
Large aperture hollow rotary tables are precision positioning platforms with an oversized central bore that supports internal routing and structural integration.The enlarged hollow section enables passage of cables, air lines, vacuum channels, or optical systems without external obstruction.
Mechanical characterization of TechMan Automation Large Aperture Hollow Rotary Tables
These rotary tables ensure high precision in angular positioning, critical in sectors like automation and manufacturing where exact movements are pivotal. The positioning accuracy of these tables is refined to less than 2 arc minutes, with a repeat positioning accuracy of less than 30 arc seconds.
The large central opening allows workpiece passage, part clamping, or beam transmission. An integrated encoder ensures closed-loop angular positioning. Engineers use these tables for heavy-duty indexing, pallet rotation, or large part machining.
The table compiles Large Aperture Hollow Rotary Tabless with photos,detailed mechanical parameters,video of test, pakcing for delivery.
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Model Selection code:
Technical parameters:
Series | Large Aperture Hollow Rotary Tables | ||||||||||
Model | TMN60 | TMN85 | TMN130 | TMN200 | TMN280 | TMN465 | |||||
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Bearing Type | Cross roller bearing | Cross roller bearing | Cross roller bearing | Cross roller bearing | Cross roller bearing | Cross roller bearing | |||||
Matching Motor | 50W/100W Servo 42/57 Stepper Motor | 200W/400W Servo 57/60/86 Stepper | 200W/400W Servo 57/60/86 Stepper | 750W/1KW Servo 86/110 Stepper Motor | 1KW-2KW Servo 110-130 Stepper Motor | 2KW-5KW Servo motor | |||||
Hollow Aperture | 28mm | 33mm | 62mm | 100mm | 150mm | 300 | |||||
Reduction Ratio | 5 | 10 | 5 | 10 | 10 | 18 | 10 | 18 | 10 | 18 | 10 |
Allowable torque | 12 N.m | 7.5 N.m | 41 N.m | 27 N.m | 60 N.m | 37 N.m | 115 N.m | 68 N.m | 150 N.m | 125 N.m | 456 N.m |
Allowable moment torque | 24 N.m | 15 N.m | 82 N.m | 54 N.m | 120 N.m | 74 N.m | 230 N.m | 136 N.m | 300 N.m | 250 N.m | 767 N.m |
Allowable plate speed | 200 Intermittent operation (rpm) | ||||||||||
Max overturning torque | 142 N | 380 N | 1200N | 2600N | 125 N.m | 300 N.M | |||||
Max radial force | 1930 N | 4800 N | 8400N | 12500N | 16500N | 18600N | |||||
Max axial force | 1930 N | 4800 N | 8400N | 12500N | 16500N | 18600N | |||||
Torsion Rigidity | 2.5Nm/arcmin | 5.9 Nm/arcmin | 16 Nm/arcmin | 28.6 Nm/arcmin | 58 Nm/arcmin | 65 Nm/arcmin | |||||
Positioning Accuracy | ±0.5 arc/min | ±0.5 arc/min | ±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 | ≤10 arc/sec | ≤10 arc/sec | |||||
Platform Runout | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | |||||
Radial runout | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | |||||
Platform concentricity | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | |||||
Platform Parallelism | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | ≤0.01mm | |||||
Backlash | 0 | 0 | 0 | 0 | 0 | 0 | |||||
Life (Hours) | >20,000 | >20,000 | >20,000 | >20,000 | >20,000 | >20,000 | |||||
Lubrication method | Synthetic grease Lubricant | ||||||||||
Protection Grade | IP50 | IP50 | IP50 | IP50 | IP50 | IP50 | |||||
Installation method | Any angle | Any angle | Any angle | Any angle | Any angle | Any angle | |||||
Operating temperature | -25℃-90℃ | -25℃-90℃ | -25℃-90℃ | -25℃-90℃ | -25℃-90℃ | -25℃-90℃ | |||||
Weight (kg) | 0.54 | 1.4 | 2.5 | 8.0 | 20 | 52 | |||||
Technical parameters of Hollow Rotary Actuators with Planetary Gear Reducers:
Series | Hollow Rotary Platforms with Planetary Gear Reducers | ||||||||||
Photo | | ||||||||||
Model | TMN60-F | TMN85-F | TMN85-F | TMN130-F | TMN200-F | TMN280-F | TMN456-F | ||||
Match able Motor (W) | 50W/100W servo 42/57 stepper | 200W/400W servo 57/60/86 stepper | 50W,100W servo 42/57 stepper | 200W/400W servo 57/60/86 stepper | 750/1000W servo 86/110 stepper | 1KW-2KW servo 110-130 stepper | 2KW-7.5KW servo motor | ||||
Hollow Aperture (Dia mm) | 28mm | 33mm | 33mm | 62mm | 100mm | 150mm | 300mm | ||||
Bearing type (i) | Cross roller bearing | ||||||||||
Reduction ratio (i) | 15/20/25/35/40/50 | 15/20/25/35/50 | 45/60/70 | 30/40/50/70/100 | 30/40/50/70/100 | 30/40/50/70/100 | Max 500 i | ||||
Allowable torque (N.m) | 12 | 41 | 20 | 60 | 115 | 150 | 200 | ||||
Allowable moment Inertia( r/min) | 24 | 82 | 40 | 120 | 230 | 300 | 300 | ||||
Allowable output speed (N.m) | 200 | 200 | 200 | 200 | 200 | 200 | 466 | ||||
Allowable Overturning moment(N) | 142 | 380 | 380 | 1200 | 2600 | 125 | 767 | ||||
Max Radial Force (N) | 1930 | 4800 | 4800 | 8400 | 12500 | 16500 | 18600 | ||||
Max Axial Force (Nm/arc-min) | 1930 | 4800 | 4800 | 8400 | 12500 | 16500 | 18600 | ||||
Torsion Rigidity (Arc-min) | 2.5 | 6.0 | 5.9 | 16 | 28 | 39 | 65 | ||||
Positioning accuracy (Arc-sec) | ±0.5 | ±0.5 | ±0.5 | ±0.5 | ±0.5 | ±0.5 | ±0.5 | ||||
Positioning repeatability (Arc-sec) | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ||||
Rotating platform end face run out | ≤0.01 (mm) | ≤0.01 (mm) | ≤0.01 (mm) | ≤0.01 (mm) | ≤0.01 (mm) | ≤0.01 (mm) | ≤0.01 (mm) | ||||
Rotating platform radial run out (mm) | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ||||
Rotating platform concentricity (mm) | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ||||
Rotating platform parallelism (mm) | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ||||
Service life (Hours) | >20000 | >20000 | >20000 | >20000 | >20000 | >20000 | >20000 | ||||
Operating temperature (℃)) | -25℃~+90℃ | -25℃~+90℃ | -25℃~+90℃ | -25℃~+90℃ | -25℃~+90℃ | -25℃~+90℃ | -25℃~+90℃ | ||||
Lubrication method | Synthetic grease lubrication | ||||||||||
Protection class (IP) | IP50 | ||||||||||
Installation method | Any angle | ||||||||||
Weight (kgs) | 0.91 | 2.43 | 1.69 | 3.86 | 12.67 | 33 | 300 | ||||
Technical parameters :With Right Angle Reducers:
Series | Hollow Rotary Platforms with Right Angle Reducers(R type and Z type) | ||||||||||
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Model | TMN60-R TMN60-Z | TMN85-R TMN85-Z | TMN85-R TMN85-Z | TMN130-R TMN130-Z | TMN200-R TMN200-Z | TMN280-Z
| TMN456-Z
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Match able Motor (W) | 50W/100W servo 42/57/60 stepper | 200W/400W servo 57/60/86 stepper | 50W,100W servo 42/57 stepper | 200W/400W servo 57/60/86 stepper | 750/1000W servo 86/110 stepper | 1KW-2KW servo 110-130 stepper | 2KW-7.5KW servo motor | ||||
Hollow Aperture (Dia mm) | 28mm | 33mm | 33 | 62mm | 100mm | 150mm | 300 | ||||
Bearing type (i) | Cross roller bearing | ||||||||||
Reduction ratio (i) | 10/15/20/25/30/50 | 10/15/20/25/50 | 30/45/70 | 20/30/50/90 | 20/30/50/90 | 30/40/50/70/100 | Max 500 i | ||||
Allowable torque (N.m) | 12 | 41 | 20 | 60 | 115 | 150 | 200 | ||||
Allowable moment Inertia( r/min) | 24 | 82 | 40 | 120 | 230 | 300 | 300 | ||||
Allowable output speed (N.m) | 200 | 200 | 200 | 200 | 200 | 200 |
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Allowable Overturning moment(N) | 142 | 380 | 380 | 1200 | 2600 | 125 |
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Max Radial Force (N) | 1930 | 4800 | 4800 | 8400 | 12500 | 16500 | 18600 | ||||
Max Axial Force (Nm/arc-min) | 1930 | 4800 | 4800 | 8400 | 12500 | 16500 | 18600 | ||||
Torsion Rigidity (Arc-min) | 2.5 | 6.0 | 5.9 | 16 | 28 | 39 | 65 | ||||
Positioning accuracy (Arc-sec) | ±0.5 | ±0.5 | ±0.5 | ±0.5 | ±0.5 | ±0.5 | ±0.5 | ||||
Positioning repeatability (Arc-sec) | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ≤15 | ||||
Rotating platform end face run out | ≤0.01 (mm) | ≤0.01 (mm) | ≤0.01 (mm) | ≤0.01 (mm) | ≤0.01 (mm) | ≤0.01 (mm) | ≤0.01 (mm) | ||||
Rotating platform radial run out (mm) | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ||||
Rotating platform concentricity (mm) | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ||||
Rotating platform parallelism (mm) | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ≤0.01 | ||||
Service life (Hours) | >20000 | >20000 | >20000 | >20000 | >20000 | >20000 | >20000 | ||||
Operating temperature (℃)) | -25℃~+90℃ | -25℃~+90℃ | -25℃~+90℃ | -25℃~+90℃ | -25℃~+90℃ | -25℃~+90℃ | -25℃~+90℃ | ||||
Lubrication method | Synthetic grease lubrication | ||||||||||
Protection class (IP) | IP50 | ||||||||||
Installation method | Any angle | ||||||||||
Weight (kgs) | 1.1 | 2.66 | 1.69 | 3.86 | 12.67 | 33 | 300 | ||||
R Type 
Z Type
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. |
Industrial Application Cases with Large Aperture Hollow Rotary Tables
Case 1: Large Turbine Casing Machining — Power Generation Equipment
A power generation equipment manufacturer needed a rotary positioning solution for machining gas turbine casings weighing 18,000 kg. Each casing required full circumferential milling, drilling, and boring across multiple faces in a single setup. Engineers specified a large aperture hollow rotary table with 800 mm bore diameter, 1,200,000 Nm tilting moment capacity, and four-point contact output bearing. Output torque reached 180,000 Nm from a hypoid gear drive at 42:1 ratio. The 800 mm bore passed hydraulic clamping circuits and a live tooling coolant rotary union simultaneously. Positioning repeatability held ±6 arcsec across full table rotation under the 18,000 kg workpiece load. Single-setup machining eliminated three separate fixture setups from the previous process. Total machining cycle time dropped by 34% per casing. Annual casing production capacity increased from 48 to 65 units without additional floor space.
Case 2: Automated Pipe Welding Positioner — Offshore Pipeline Fabrication
An offshore pipeline fabricator needed a positioner for circumferential girth welding on 600 mm diameter pipe sections up to 4,000 kg. Engineers selected a large aperture hollow rotary table with 650 mm through-bore, allowing pipe sections to pass completely through the rotary axis for full circumference access. Output torque reached 25,000 Nm at 0.8 RPM welding speed. The hollow bore carried welding rotary ground connections and argon shielding gas lines internally. Speed stability held within ±0.2% across the full rotation cycle, keeping heat input variation below AWS D1.1 tolerance limits. The table accumulated 14,000 operating hours across two years of three-shift fabrication without output bearing replacement or gear drive maintenance intervention.
FAQs about Large Aperture Hollow Rotary Tables
- What defines a large aperture hollow rotary table versus a standard hollow rotary table?
Large aperture units carry through-bore diameters above 200 mm. Standard hollow rotary tables start from 50 mm bore. Large aperture designs require larger output bearing systems, reinforced housings, and higher-capacity drive mechanisms to maintain positioning accuracy under heavy workpiece tilting moments. Bore sizes above 200 mm allow large workpieces, multi-passage rotary unions, and complex slip ring assemblies to pass through the axis simultaneously. - How does bore diameter affect large aperture rotary table structural stiffness?
Larger bore diameters reduce material cross-section in the output flange and bearing support structure. This lowers torsional and bending stiffness relative to solid table designs of equivalent outer diameter. Engineers compensate by increasing wall thickness, using higher-grade steel alloys, and adding reinforcing ribs to the housing structure. Finite element analysis verifies deflection stays within positioning accuracy limits under maximum combined loading conditions.
You are welcome to watch more projects or visit our website to check other series or load down e-catalogues for further technical data.
