TECMA DRIVE guide
What Tecma Drive manufactures and what sets it apart
Tecma Drive specializes in the manufacture of slewing rings, also known as slewing bearings. These components are large-diameter bearings with gearing, designed to support axial, radial loads and tilting moments simultaneously, allowing rotational movement between two structures.
Tecma Drive slewing rings stand out for their robustness and precision, being suitable for high-demand applications such as cranes, excavators, aerial platforms and orientation systems. Their modular design allows adaptation to different sizes and gearing configurations, facilitating integration into new equipment or as a replacement in maintenance.
Tecma Drive lines sold by MR
MR Accesorios Industriales sells the Tecma Drive slewing rings line within the Power transmission category. The Slewing rings subcategory includes rings with external gearing, internal gearing and without gearing; the TD series slew drives have their own subcategory, Slew drives.
In addition to rings with designations E., I. and SD., we work with the TD series slewing modules, in different sizes.
Main Tecma Drive series
The TD series of Tecma Drive groups slewing modules in different sizes. Below, we detail the general characteristics and examples of real codes.
TD Series
The TD series is designed for applications requiring controlled rotation and high load capacity. It is available in different sizes and variants, identified in the code.
Examples of codes: TD-E7-RL, TD-E9-RL, TD-R7-RL, TD-R9-RL.
How to read a Tecma Drive code
The designation of Tecma Drive slewing rings follows a structure that combines letters and numbers to indicate the type of gearing, dimensions and construction characteristics. Understanding this nomenclature is key to identifying the correct replacement.
Below, we explain the general structure and show real examples from the catalog.
General structure
A typical code such as TD-E7-RL is broken down as follows:
TD-E identifies the standard slew drive series. TD-R identifies the series with IP66 protection against water and dust, according to the Tecma Drive 2026 catalog. In TD-E7-RL, 7 identifies the series size and RL is part of the complete code: order it exactly as it appears on the drive nameplate.
It is important to verify the complete code when requesting a replacement, as small variations may imply differences in gearing or mounting dimensions.
Examples of real codes
In MR's catalog you will find codes such as TD-E7-RL, TD-E9-RL, TD-R7-RL and TD-R9-RL. Each corresponds to a TD series slewing module with specific size and configuration characteristics.
Additionally, in Tecma Drive's technical documentation, designations such as E.318.22.00.D.1, I.340.16.00.D.1 or E.505.20.00.C appear, which follow a similar logic: initial letters for the type of gearing (E external, I internal, SD without gearing), numbers for dimensions and suffixes for variants.
Frequent Tecma Drive prefixes and suffixes
Suffixes in Tecma Drive codes indicate specific product characteristics. Knowing them helps select the appropriate slewing ring for each application.
Some common suffixes are:
RL: part of the TD slew drive code; order the complete code as shown on the nameplate.
D.1, D.6: variant suffixes in rings such as E.318.22.00.D.1; details are in the code's data sheet.
B, C: suffixes that appear in rings of the same size (for example E.505.20.00.B and E.505.20.00.C) and identify variants.
I: at the beginning of the code, indicates internal gearing.
E: at the beginning of the code, indicates external gearing; SD indicates ring without gearing.
We always recommend verifying the technical data sheet of the exact code to confirm specifications.
Applications by industry in Argentina
Tecma Drive slewing rings are used in a wide variety of industries in Argentina. Below, we detail the main applications by sector.
Metallurgical
In the metallurgical industry, slewing rings are used in rotary tables for machining, welding positioners and heavy part handling equipment. Their ability to support combined loads and maintain precision under load is essential.
Agricultural
In agriculture, they are used in cranes and loading platforms, and in grain movement equipment. Robustness and weather resistance are key in this sector.
Naval
In naval applications, slewing rings are installed in deck cranes, davits and mooring systems. They must resist marine corrosion and support dynamic loads.
Oil
In the oil industry, they are used in cranes, pipe handling equipment and orientation systems. Reliability under demanding conditions is essential.
Food
In food plants, slewing rings are used in mixers, rotary fillers and packaging systems. Materials suitable for indirect food contact and easy cleaning are required.
Mining
In mining, they are used in excavators, shovels and cranes. They must withstand extreme loads and abrasive environments.
Paper
In the paper industry, slewing rings are installed in winders, unwinders and roll change systems. Precision and durability are critical to avoid plant downtime.
Cement
In cement plants, they are used in maintenance cranes, stackers and material handling equipment. Dust requires sealed and robust bearings.
Energy
In the energy sector, they are used in wind turbines for blade pitch control and nacelle orientation, as well as in solar trackers. Precision and low friction are important.
Automotive
In the automotive industry, slewing rings are used in assembly lines, rotary welding tables and manipulators. Repeatability and low maintenance are valued.
Plastics
In plastics plants, they are installed in injection and blow molding machines, where precise rotation and support of heavy molds are required.
Refrigeration
In refrigeration plants, slewing rings are used in rotary tables and handling equipment. They must withstand low temperatures and frequent washing.
Sugar
In the sugar industry, they are used in cranes and cane handling equipment. Resistance to moisture and impact loads is fundamental.
How to choose the right Tecma Drive
Selecting the appropriate slewing ring requires evaluating several technical factors. Below are the main criteria:
Load: determine the axial, radial loads and tilting moments that the equipment will support. Tecma Drive offers models with different capacities.
Rotation speed: although slewing rings usually operate at low revolutions, it is important to verify the maximum allowable speed.
Type of gearing: choose between external or internal gearing according to the design of the drive mechanism.
Sealing: for environments with dust, moisture or contaminants, opt for versions with adequate seals; the data sheet of each code indicates the execution.
Internal clearance: in precision applications, reduced clearance or preload may be required.
Mounting: verify the diameter of the fixing holes and the bolt pattern to ensure compatibility with the structure.
Environment: consider temperature, exposure to chemicals or corrosion to select the appropriate surface treatment.
Equivalences and interchangeability
Slewing rings are compared by their dimensions: diameters, height, hole pattern, type of gearing and module, not only by the code.
If you need to replace a slewing ring from another brand, we recommend sending us the original code or the main measurements (outer diameter, inner diameter, height, type of gearing and module) to identify the most suitable Tecma Drive option.
Frequent errors when replacing or buying Tecma Drive
When purchasing a slewing ring, it is common to make mistakes that can lead to premature failures or incompatibility. The most frequent are:
Confusing the type of gearing: external vs. internal. Always verify the initial letters of the code (E, I or SD).
Not considering the gearing module: even if the diameter is similar, the tooth pitch must match the drive pinion.
Ignoring the hole pattern: the number and distribution of fixing holes must match the structure.
Not verifying the sealing: in dirty environments, an inadequate seal shortens service life.
Underestimating loads: choosing a ring with insufficient capacity causes fatigue failures.
To avoid these problems, always consult the technical data sheet of the exact code or seek advice from our technical team.
Mounting, lubrication and maintenance
Correct mounting and maintenance is essential to maximize the service life of Tecma Drive slewing rings. Below are good practices:
Mounting: ensure that support surfaces are flat and clean. Tighten bolts in a cross pattern and with the torque recommended by the manufacturer.
Lubrication: use suitable grease for large-diameter bearings, applying it at the recommended intervals. Periodic relubrication prevents premature wear.
Inspection: periodically check axial and radial clearance, and detect signs of corrosion or damage to seals.
Storage: if the ring is not installed immediately, store it horizontally, in a dry place and protected from impacts.
Following these recommendations helps prevent failures and prolong reliable equipment operation.
Why get a quote for Tecma Drive at MR Accesorios Industriales
MR Accesorios Industriales is exclusive representative of Tecma Drive in Argentina, which allows us to offer the original line of slewing rings with technical support. We have worked with Argentine industry since 1945, offering high-quality power transmission products.
Our online catalog allows you to search by Tecma Drive code and see photos and specifications of each reference. If you have the code of another brand or an unidentified part, we help you find the equivalent slewing ring.
Located in Buenos Aires, Argentina, we serve the entire country. Get a quote via WhatsApp or email by sending the code, measurements or a photo of the part, and we will respond promptly.
Frequently asked questions about TECMA DRIVE
- What is a Tecma Drive slewing ring?
- It is a large-diameter bearing with gearing, designed to support axial, radial loads and tilting moments, allowing controlled rotation between two structures. It is used in cranes, excavators, aerial platforms and other industrial equipment.
- How do I read a Tecma Drive code?
- The code consists of an initial letter indicating the type of gearing (E for external, I for internal, SD for without gearing), followed by numbers representing dimensions and suffixes indicating variants. The TD series slewing modules, such as TD-E7-RL, carry the prefix TD followed by the variant, size and configuration suffix.
- Does Tecma Drive have equivalents with other brands?
- Slewing rings are compared by dimensions, not only by code. If you need to replace a ring from another brand, send us the original code or main measurements and we will help you identify the appropriate Tecma Drive option.
- Is MR the exclusive representative of Tecma Drive in Argentina?
- Yes, MR Accesorios Industriales is the exclusive representative of Tecma Drive in Argentina, which allows us to offer the original line of slewing rings with technical support.
- Which industries use Tecma Drive slewing rings?
- They are used in metallurgical, agricultural, naval, oil, food, mining, paper, cement, energy, automotive, plastics, refrigeration and sugar industries, among others.
- How do I choose the correct slewing ring?
- You must consider loads (axial, radial and moment), rotation speed, type of gearing, sealing, internal clearance, hole pattern and environmental conditions. We advise you with your application data.
- What maintenance does a Tecma Drive slewing ring require?
- It requires periodic lubrication with suitable grease, inspection of clearance and seals, and correct bolt tightening. Mounting on flat and clean surfaces is essential.
- How do I get a quote for a Tecma Drive slewing ring at MR?
- You can get a quote via WhatsApp or email by sending the Tecma Drive code, measurements or a photo of the part. We will respond promptly with the proposal.
Updated September 29, 2026