AUMA TIGRON TR-M (TIGRON-M) Explosion-Proof Multi-Turn Actuator
Overview: A Modern Platform for Rising-Stem Valve Automation
The AUMA TIGRON TR-M Multi-Turn Actuator carries out a classic actuator mission – automating gate valves with or without rising stem, as well as double block and bleed valves – through a modern actuator platform built for precision, modularity, and wide operating range. AUMA lists the product as TIGRON-M (type designation TR-M), an explosion-proof design approved to ATEX, IECEx and FM for gas and dust atmospheres. Rising stems pass through the TIGRON’s hollow shaft, which drives the stem thread directly, while a stem protection tube shields the stem from contamination and protects personnel from injury, a design detail that supports virtually unlimited stroke length for valves with long travel requirements.
As a trusted supplier of AUMA valve actuators, Seven Star LLC sources and supplies the TIGRON TR-M multi-turn actuator to refineries, gas processing plants, and process industries across Oman and the wider GCC. Because TIGRON’s modular gearbox compatibility extends its reach well beyond simple gate valve service, Seven Star LLC helps engineering teams specify the right TIGRON configuration – standalone or combined with a gearbox – for their specific valve automation project.
Working Principle: Precision Sensing Across a Wide Torque and Speed Range
The TIGRON drives the valve stem thread through its hollow shaft, with a Combi-Switch providing optimized operation by combining limit and torque sensing functions in a single integrated device. Limit sensing supports up to 5,000 turns per stroke, accommodating valves with very long travel requirements, while torque sensing covers the full 0 to 100% of maximum torque range, giving precise control over seating force and protecting the valve seat from over-torquing at both open and closed end positions.
TIGRON actuator versions are available for both open-close duty and modulating duty, and the actuator’s wide-range power supply unit accommodates varying site voltage conditions without requiring a separate voltage-matched transformer. This combination of precision sensing and flexible power input makes the TIGRON well suited to both straightforward isolation valve duty and more demanding continuous control applications on the same core actuator platform.
Engineering Design of the TIGRON TR-M
The TIGRON is rated IP68 and covers a torque range of 10 to 1,000 Nm with output speeds of 4 to 216 rpm, and an exceptionally wide ambient temperature rating from -65°C to +75°C, supporting installation in extreme cold as well as hot desert environments; the TIGRON TR-M SIL version is specified for -63°C to +70°C. A handwheel provides manual operation for commissioning, maintenance, and emergency positioning independent of electrical power.
The TIGRON’s modular AUMA scheme allows it to be combined with any of six AUMA gearbox type ranges, extending its application well beyond standalone gate valve automation. Combined with GK bevel gearboxes or GST spur gearboxes, torques up to 16,000 Nm can be reached, while pairing with AUMA part-turn gearboxes extends TIGRON’s reach to butterfly valves and the ball valves common in oil and gas industry applications requiring roughly 90-degree part-turn movement. AUMA linear thrust units can further convert TIGRON’s multi-turn output into the thrust movement required for globe valve automation, making TIGRON a genuinely universal actuator core across multiple valve types.
Explosion Protection and Certification of the AUMA TIGRON TR-M
The AUMA TIGRON TR-M is certified to ATEX and IECEx for gas group IIC, the highest gas group, covering hydrogen and similarly reactive atmospheres common in refinery and gas processing service. The marking is Ex db eb h IIC T4 Gb for gas atmospheres and Ex h tb IIIC T130°C Db for dust atmospheres, with North American approval held under FM for Class I, Division 1, Groups B, C and D T4 and Class II/III, Division 1, Groups E, F and G T130°C. A resistant powder coating delivers C5/CX corrosion protection – the most severe category in the ISO 12944 corrosivity scheme – against tropical moisture, salt-laden coastal air, and wind-blown sand, the exact combination met on Omani coastal and desert sites.
Functional Safety and Control Integration
A dedicated SIL version of the TIGRON TR-M is certified by TÜV Nord to IEC 61508 and ISO 13849, reaching SIL 2 with a hardware fault tolerance of 0 and systematic capability 3, so that SIL 3 remains achievable in a redundant architecture. Up to four independent safety functions can be configured with user-defined priorities – safe opening and safe closing for emergency shutdown duty, timed safe operation to avoid pipeline pressure surges, safe stop, and safe end position feedback – supported by five assessed safety outputs and parameterizable seating type, tripping torque, and overload protection.
For process integration the actuator provides position transmitter outputs alongside Profibus and Modbus interfaces for direct DCS connection, and its actuator controls can be mounted separately from the actuator where the valve sits in a confined, high-vibration, or thermally hostile position.
Key Features
The AUMA TIGRON TR-M Multi-Turn Actuator delivers precision, modularity, and wide environmental range. Key characteristics include:
- Virtually unlimited stroke via hollow-shaft rising-stem drive with protective stem tube.
- Combi-Switch combining limit sensing (up to 5,000 turns per stroke) and torque sensing (0-100%) in one device.
- Open-close and modulating duty versions available on the same platform.
- Wide-range power supply unit accommodating varying site voltage conditions.
- IP68 protection with an exceptional -65°C to +75°C ambient temperature range.
- Modular compatibility with six AUMA gearbox ranges, extending reach to part-turn and linear valve types.
- In combination with GK or GST gearboxes, torque capacity extends up to 16,000 Nm.
Industrial Applications
The TIGRON TR-M is deployed for gate valve and double block and bleed valve automation across refineries, gas processing plants, and pipeline infrastructure, and – through its modular gearbox compatibility – extends to butterfly and ball valve automation in oil and gas applications and globe valve automation via linear thrust unit combination. Its wide ambient temperature range makes it particularly suited to Gulf-region installations spanning extreme summer heat.
Seven Star LLC supports refinery instrumentation teams, gas processing operators, and EPC contractors across Oman, Muscat, Sohar, and the broader GCC region with sourcing of AUMA TIGRON actuators, helping projects standardize on a single modular actuator platform across multiple valve automation needs.
Technical Specifications
The table below summarizes the core specifications of the AUMA TIGRON TR-M Multi-Turn Actuator as supplied by Seven Star LLC.
| Parameter | Specification |
|---|---|
| Model | AUMA TIGRON TR-M Series (AUMA designation: TIGRON-M) |
| Explosion Protection | ATEX / IECEx: Ex db eb h IIC T4 Gb; Ex h tb IIIC T130°C Db. FM: Class I, Division 1, Groups B, C, D T4; Class II/III, Division 1, Groups E, F, G T130°C |
| Type | Electric, multi-turn actuator (also part-turn/linear via gearbox combination) |
| Torque Range | 10 Nm to 1,000 Nm (standalone); up to 16,000 Nm with GK/GST gearbox |
| Output Speed | 4 to 216 rpm |
| Protection Class | IP68 |
| Ambient Temperature | -65°C to +75°C |
| Duty Rating | Open-close, positioning and modulating duty |
| Sensing | Combi-Switch: limit sensing up to 5,000 turns/stroke, torque sensing 0-100% |
| Typical Valve Types | Gate valves, double block and bleed valves (also butterfly, ball, globe via gearbox) |
Request a Quote for AUMA TIGRON TR-M Explosion-Proof Multi-Turn Actuator
Seven Star LLC supplies the AUMA TIGRON TR-M multi-turn actuator with full manufacturer documentation and regional technical support. Contact our instrumentation and valve automation division for a formal RFQ, to confirm the correct TIGRON configuration and gearbox combination for your valve type, or to obtain the complete technical datasheet. Seven Star LLC ensures every unit shipped across Oman and the GCC is genuine, correctly configured, and backed by local engineering support.
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- Datasheet AUMA TIGRON TR-M Datasheet Download
AUMA actuator and gearbox types
SA multi-turn actuators handle open-close duty on gate and globe valves, and SAR is the modulating version; the listing includes the SA 07.2, SA 10.2 and SA 25.1. SAEx and SAREx are the explosion-proof equivalents. Part-turn duty on ball and butterfly valves is covered by SQ and the modulating SQR, or by an SA actuator combined with a GS part-turn gearbox. LE linear thrust units convert multi-turn output to thrust, and GHT multi-turn gearboxes extend the torque range up to 120,000 Nm. PROFOX is the compact actuator line. Special items include the seawater-resistant SGM and SGMR part-turn actuators with bronze housings, the SVC and SVCR globe valve actuators and the FQM fail-safe unit. Integral controls come as AM or AC versions.Where AUMA electric actuators are used
AUMA actuators are found in water, power, oil and gas, marine and general industry. In practice that means isolation and control valves in water treatment and pumping stations, power plant steam and cooling systems, tank farms and pipelines, and sluice gates and dampers.Ordering AUMA actuators and parts: what we need
For a replacement send photos of the actuator, motor and controls nameplates: type, order number, serial number and wiring diagram number. For a new actuator we need:- valve type, required torque or thrust, and turns or stroke
- valve mounting flange and stem or shaft details
- output speed, duty (open-close or modulating)
- supply voltage and frequency, control signals or fieldbus
- enclosure protection, ambient temperature, Ex requirement
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