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Hollow Rotary Drive

Tornex DRN-Series Hollow Rotary Platform

High-precision hollow rotary platform with integrated cross roller bearing for direct through-shaft cabling and pneumatic lines. The DRN-Series combines precision gearing with a large hollow bore, delivering accurate rotary positioning for automation and indexing applications.

DRN-Series Gearbox

Backlash Accuracy

≤3 arcmin

Ultra-precision (P0)

Mechanical Efficiency

96%

Peak mechanical efficiency

Peak Output Torque

≤30 arcsec

Positioning accuracy

Reduction Ratios
3:1 - 10:1
single stage
Rated Output Torque
800
Nm max
Operating Temp
-10 to +90
°C
Parameter Unit Value
Positioning Accuracy High Precision ≤30 arcsec
Hollow Diameter mm Up to 120
Transmission Efficiency % Up to 96
Bearing Type High Rigidity Cross Roller Bearing
Protection Standard IP65
Service Life hrs (S5) 20,000
Lubrication Life-Sealed Synthetic Grease
Model Range
AD042-AD220
7 frame sizes
Max Torque Range
10-800
Nm
Weight Range
0.6-45
kg
Model Ratio Range Rated Torque (Nm) Max Torque (Nm) Max Speed (rpm) Weight (kg)
AD042 10-15 3-10 30-45 6,000 0.6
AD060 22-35 3-10 66-105 6,000 1.3
AD090 55-85 3-10 165-255 6,000 3.5
AD115 100-170 3-10 300-510 6,000 7.0
AD142 220-350 3-10 660-1,050 4,500 13
AD180 420-600 3-10 1,260-1,800 4,500 25
AD220 550-800 3-10 1,650-2,400 3,000 40

Values are per single-stage reduction at rated input speed 3,000 rpm. Torque varies by ratio — lower ratios produce higher rated torque. For multi-stage configurations and custom motor mounting, consult engineering.

2-Stage Ratios
12:1-100:1
14 ratio options
Efficiency (2-Stage)
Up to 92%
96% × 96%
Model 2-Stage Ratios Rated Torque (Nm) Max Torque (Nm) 2-Stage Wt (kg)
AD042 12-100 21-36 63-108 0.8
AD060 12-100 48-84 144-252 1.7
AD090 12-100 120-204 360-612 4.8
AD115 12-100 225-405 675-1,215 9.5
AD142 12-100 495-825 1,485-2,475 18
AD180 12-100 930-1,410 2,790-4,230 34
AD220 12-100 1,230-1,860 3,690-5,580 56

Multi-stage torque values are reduced proportionally to account for compound gear train losses. Weight increases with additional gear stages. Contact engineering for detailed sizing.

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Hollow Bore Design

Large hollow bore allows routing of cables, hoses, and shafts directly through the center of the rotary platform. Eliminates the need for complex cable management systems.

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Cross Roller Bearing

Integrated cross roller bearing provides high rotational rigidity and load capacity. Handles combined axial, radial, and moment loads with minimal deflection.

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Maintenance-Free Operation

Lifetime synthetic grease lubrication ensures maintenance-free operation for 20,000 hours (S5 duty cycle). IP65 protection standard for reliable operation in harsh environments.

Technical Documentation

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Datasheet

PDF • 4.2 MB

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Configure Your DRN-Series

Need help selecting the right ratio, backlash class, or custom input mounting? Our application engineering team is ready to assist with sizing calculations and configuration for your specific motion control application.