Internal Gears  Manufacturers, Traders, Suppliers

• pintle chain casted version as per DIN 654 / CSN 023382
• conveyor chains as per DIN 8165 and DIN 8167
• detachable chains as per DIN 686 / CSN 023372
• drop forged chains
• special chains as per drawing
• sprockets
• drive and deviating shafts
• Round link chains and chain shackles
• Elevatorbuckets, Elevatorscrews and Elevatorbelts
• Special Screws as per DIN 2510 or drawing

As one of the leading manufacturers and further processors, ISO-TECH has been producing high-quality thermoplastic products for domestic and foreign customers for more than 30 years. A broad range of production possibilities, a sustainable corporate policy and a distinct customer orientation characterize our company.
After founding the company in 1990 with initially four employees, we quickly established ourselves as a specialist in the technical plastics segment. With the help of a continuous organic growth, we have steadily expanded both the production of semi-finished goods and the range of finished parts. The first milestones were already achieved in 1995, when we were initially certified according to ISO 9001 and the staff had grown to more than 20 employees. With the opening of a second plant in 2010, we were able to expand our range of products by additional high-performance plastics. With the 25th anniversary in 2015, our owner-managed company was delivering goods into almost all branches of industry. Today, ISO-TECH employs roundabout 200 people and invests continuously in the expansion of the production range and vertical integration.
Our range of products varies from our own production of semi-finished goods to variously processed finished parts made of standard and engineering plastics or high-performance plastics. In the semi-finished goods segment, we produce plastic sheets in various standard dimensions and thicknesses However, a large part of our semi-finished goods is being processed inside our plants into individual machined parts. In addition to large as well as prototype-series, we offer our clients individually customized products. Both high and ultra-high-molecular-weight polyethylenes (e.g. PE500, PE1000) as well as polyamides (PA), polyoxymethylenes (POM) and other materials like PVDF or PEEK are being machined in our factories. A distinctive quality management, constant education and training of our employees as well as a precise selection of raw materials ensure the reliability of our products.
Sustainability is important for us at all levels – both in economic and social terms as well as in ecologic terms. In addition to a long-term policy of balanced growth, our focus is on enduring customer relationships. By running a corporate health management programme, we focus on securing the health of our employees. Furthermore, we are making an important environmental contribution by recycling 100% of our polyethylene material waste and by constantly investing in energy efficiency measures and renewable energies.

Internal Gears are a type of gear where the teeth are located on the inner circumference, meshing with external gears (or pinions) to transmit power and motion. They are commonly used in compact mechanical designs, especially in applications where space savings or specific transmission ratios are required.

Below is a detailed English description of the technical data for internal gears:
Technical Data for Internal Gears
1. Material Specifications

• Common Materials:

• Carbon Steel (e.g., C45, AISI 1045): Offers good strength and machinability.
• Alloy Steel (e.g., 42CrMo4, 34CrNiMo6): Typically undergoes carburizing, quenching, and tempering to enhance surface hardness and wear resistance.
• Stainless Steel (e.g., 304, 316): Provides corrosion resistance for applications in harsh environments.

Performance Requirements:

• Materials must exhibit excellent wear resistance, high fatigue strength, and sufficient toughness to handle high loads and high-speed operations.

2. Manufacturing Process

• Machining Methods:

• CNC Milling & Hobbing: Used for rough and finish machining to accurately generate the gear tooth profile.
• Internal Grinding: Further refines the gear’s internal surface, achieving high precision and a superior finish.

Heat Treatment:

• Processes like quenching, tempering, and carburizing are applied to improve surface hardness and extend service life.

3. Geometrical Parameters & Tolerances

• Key Parameters:

• Module (m): The basic unit defining the size of the gear teeth.
• Pressure Angle (α): Common values are 20° or 25°, which affect the engagement characteristics of the gear.
• Number of Teeth (z): Internal gears often feature a higher tooth count to achieve finer transmission ratios.
• Internal Bore Diameter & Outside Diameter: These dimensions are designed based on the installation and operational requirements.

Tolerance Requirements:

• Precision machining usually targets tolerance classes around IT6 to IT8 to ensure excellent meshing with the mating gear components.

4. Mechanical Performance

• Tensile and Yield Strength: Defined based on material selection and heat treatment to prevent plastic deformation under load.
• Hardness: Post-heat treatment surface hardness typically reaches HRC 58-62, ensuring improved wear resistance.
• Fatigue Life: The design must consider fatigue performance under cyclic loads, ensuring reliable long-term operation.

5. Surface Treatments & Coatings

• Surface Hardening: Techniques like carburizing and quenching are used to increase surface hardness and wear resistance.
• Polishing & Grinding: These processes improve the surface finish, reducing friction during meshing.
• Corrosion Protection: Treatments such as chrome plating or specialized anti-corrosion coatings may be applied for environments prone to moisture or chemical exposure.

6. Applications
Internal gears are widely used in systems where precise power transmission is critical. Typical applications include:

• Automotive Transmissions: Such as in differential systems and gearboxes.
• Aerospace: For components in aircraft engines and auxiliary drive systems.
• Precision Machinery: In CNC machines and automated equipment requiring high-accuracy motion.
• Heavy Equipment: In mining or construction machines where robust and reliable power transfer is essential.

7. Standards & Inspection

• Standards:

• Internal gear design and manufacturing are governed by standards such as DIN and ISO (e.g., DIN 3960, DIN 3961, DIN ISO 1328).

Inspection Methods:

• Evaluation includes checking tooth profile accuracy, pitch deviation, surface roughness, and verifying heat treatment effects to ensure compliance with design specifications.

8. Operating Environment & Temperature Requirements

• Temperature Range: Typically designed to operate between -20°C to +150°C, though specific requirements depend on material selection and application.
• Lubrication: In high-speed or high-load applications, high-performance lubricants are necessary to maintain proper meshing and minimize wear over prolonged use.

Conclusion
Internal gears, with their precisely engineered tooth profiles and robust mechanical properties, are indispensable in high-precision transmission systems. By selecting appropriate materials, employing advanced machining and heat treatment processes, and adhering to strict tolerance standards, these gears can deliver long-lasting, efficient, and reliable performance across automotive, aerospace, precision machinery, and heavy-duty applications.
If you need further details or specific data points for your application, feel free to ask!

Internal gears are widely used in systems where precise power transmission is critical. Typical applications include:

• Automotive Transmissions: Such as in differential systems and gearboxes.
• Aerospace: For components in aircraft engines and auxiliary drive systems.
• Precision Machinery: In CNC machines and automated equipment requiring high-accuracy motion.

Our core competence is the complete manufacture of complex drive engineering elements and components.
With modern CNC machines, we manufacture precise components for industrial use according to the quality requirements of our customers.
State-of-the-art CNC sawing machines guarantee only a minimum of waste and, due to their small measurements, the optimisation of subsequent cutting times.
As a supplier, we have acquired extensive knowledge in dealing with renowned companies of machine and plant construction and in the conveyor system sector.
Years of production experience and technical expertise mean we are a partner who can quickly and reliably cater for the demands of our customers.
In order to meet the rising quality requirements of our customers, it is our objective to improve our quality standards and to render them documentable and measurable using state-of-the-art test methods. In so doing, we rely on a measuring machine produced by Zeiss.
To us, the high quality of products and processes is a precondition for the smooth processing of orders. This claim results in a high level of reliability, combined with the flexibility of a modern medium-sized business.