TGB I.1200.20.00.C - Internal Gear Slewing Ring Bearing

TGB I.1200.20.00.C - Internal Gear Slewing Ring Bearing

Product Description

TGB I.1200.20.00.C is a single-row ball slewing ring bearing manufactured by TGB Group Technologies, belonging to the I.20.C series. The bearing features internal gear teeth and a flanged mounting design. Its catalogue outer diameter is 1198 mm, inner diameter is 985.6 mm, and nominal weight is 83 kg. The internal gear has a module of 8 and 125 teeth.

The TGB I.1200.20.00.C slewing bearing is designed for rotating mechanical assemblies requiring controlled relative movement between two structural components.

Slewing ring bearings, also known as slewing bearings, turntable bearings or slewing rings, are widely used in industrial machinery, rotating platforms and mechanical positioning systems.

Depending on their construction and operating conditions, slewing ring bearings can accommodate combinations of axial loads, radial loads and overturning moments.

The internal gearing allows the bearing to be integrated into a suitable rotary drive system using a mating pinion gear.

Correct selection requires verification of bearing dimensions, mounting arrangements, gear geometry, load capacity and operating conditions.

Technical Specifications - TGB I.1200.20.00.C

Technical note: These values correspond to the published TGB I.20.C series catalogue specifications for designation I.1200.20.00.C. Dimensions B, U and C are drawing-specific reference dimensions and must not automatically be interpreted as the bearing's overall height.

The stated tangential gear forces refer to the gear teeth, not to the complete bearing's axial or radial load capacity.

For final engineering selection, the manufacturer's current technical drawing, load capacity diagrams and installation instructions should be consulted.

TGB I.1200.20.00.C Bearing Dimensions

The bearing's main catalogue dimensions are:

Outer Diameter - 1198 mm

The outer diameter is an important dimensional parameter when determining installation space and compatibility with the surrounding structure.

Inner Diameter - 985.6 mm

The inner diameter defines the nominal central opening of the bearing.

This dimension is particularly relevant when the rotating assembly requires a central passage for structural elements, mechanical components or other equipment.

Mounting Pitch Circles

The bearing has two mounting arrangements:

• Outer mounting pitch circle diameter: 1170 mm.

• Inner mounting pitch circle diameter: 1055 mm.

These dimensions must be checked together with the number, diameter and specification of the mounting holes.

Additional Catalogue Dimensions

The manufacturer also specifies dimensions B, U and C.

These must be interpreted using the corresponding TGB technical drawing because their meaning depends on the geometry of the bearing series.

What Does TGB I.1200.20.00.C Mean?

TGB - Manufacturer

TGB Group Technologies is a manufacturer and supplier of mechanical components, including slewing ring bearings used in industrial applications.

I - Internal Gear Configuration

In this product series, the initial letter I identifies the internal gear configuration.

The gear teeth are positioned on the inner circumference of the slewing ring.

1200 - Series Size Designation

The number 1200 forms part of the manufacturer's nominal size designation.

It should not be interpreted as the exact outer diameter of the bearing.

The published outer diameter of this model is 1198 mm.

20 - Bearing Series

The designation belongs to the manufacturer's I.20.C series.

This series uses ball rolling elements with a nominal diameter of 20 mm.

00.C - Manufacturer-Specific Designation

The remaining characters identify the manufacturer's specific product configuration.

Their exact interpretation should be confirmed in the TGB catalogue rather than inferred without supporting documentation.

Single-Row Ball Slewing Ring Bearing Construction

Rolling Elements

The TGB I.1200.20.00.C belongs to a series of ball slewing ring bearings.

Rolling elements allow relative rotational movement between the bearing rings.

The bearing arrangement is designed to support appropriately calculated combinations of loads and moments.

The permissible load combinations depend on the manufacturer's load capacity diagrams and the structural conditions of the installation.

Bearing Rings and Raceways

The bearing rings provide the structural interfaces between the stationary and rotating parts of the assembly.

The raceways guide the rolling elements and transfer forces between the connected structures.

The load-carrying performance depends on bearing geometry, material properties, mounting rigidity and operating conditions.

Flanged Construction

The I.20.C series uses a flanged design intended for installation in suitable mechanical structures.

The flanges provide mounting interfaces between the bearing and adjacent components.

Correct installation requires suitable supporting surfaces and appropriate fastening arrangements.

Internal Gear Teeth

The internal gear is integrated into the bearing design.

It allows rotary motion to be transmitted through a correctly selected mating pinion.

The gear arrangement must be selected according to the required torque, speed, loading and operating conditions.

Internal Gear Specifications

Gear Module 8

The module is a fundamental parameter of metric gear geometry.

A module of 8 indicates the nominal tooth size and is important when selecting the mating pinion.

However, matching the module alone does not guarantee correct gear compatibility.

Pressure angle, tooth geometry, centre distance, backlash and other design parameters must also be verified.

125 Gear Teeth

The bearing has 125 internal gear teeth.

The number of teeth is relevant to gear ratio calculations and rotary drive design.

Gear Pitch Diameter

The published gear pitch diameter is 1000 mm.

For a standard metric gear, the relationship between module, number of teeth and pitch diameter is:

Where:

• P - pitch diameter in mm.

• m - gear module.

• z - number of teeth.

For this bearing:

This confirms the consistency of the published gear parameters.

Tangential Gear Forces

The manufacturer specifies:

• Nominal tangential gear force: 28.5 kN.

• Maximum tangential gear force: 39.9 kN.

These values describe the published gear loading parameters.

They must not be interpreted as the complete slewing bearing's axial load capacity, radial load capacity or permissible overturning moment.

The actual suitability of the bearing for a particular drive system requires a complete engineering assessment.

Mounting Hole Configuration

The TGB I.1200.20.00.C slewing ring has two mounting hole arrangements.

The mounting hole configuration is essential for compatibility with the supporting structure.

Before installation, verify:

• Mounting hole diameters.

• Hole spacing and arrangement.

• Bolt specifications.

• Bolt strength class.

• Required tightening torque.

• Support surface geometry.

• Structural rigidity.

• Manufacturer's installation requirements.

The number of mounting holes alone is insufficient to determine bolt size or tightening torque.

How Does an Internal Gear Slewing Ring Bearing Work?

An internal gear slewing ring bearing combines rotational support with a gear-driven motion system.

The bearing connects two structural components, allowing one to rotate relative to the other.

A drive pinion engages with the internal gear teeth and transmits rotational movement to the bearing assembly.

The rolling elements support the relative rotation while transferring the loads between the bearing rings.

The resulting motion depends on the drive configuration, gear ratio, load conditions and mechanical design.

This arrangement is used in applications where a relatively large rotating structure must be supported and positioned.

Internal Gear vs External Gear Slewing Bearings

An internal gear configuration may be advantageous when the drive system is designed around an internally positioned pinion.

However, the choice between internal and external gearing depends on the mechanical layout, available space, gear loads and application requirements.

A slewing bearing with external gearing is not automatically interchangeable with an internally geared model.

Typical Applications of TGB Slewing Ring Bearings

Single-row ball slewing ring bearings with internal gearing are used in mechanical assemblies requiring rotational movement under appropriately calculated loads.

Typical application categories include:

• Industrial rotating platforms.

• Turntable mechanisms.

• Material handling equipment.

• Construction machinery.

• Mechanical positioning systems.

• Industrial rotary assemblies.

• Equipment requiring controlled angular movement.

These are general applications of internally geared slewing ring bearings.

They do not constitute a verified list of original equipment applications for the specific TGB I.1200.20.00.C model.

Final suitability must be established through engineering calculations and the equipment manufacturer's requirements.

How to Select the TGB I.1200.20.00.C Slewing Bearing

Before ordering, verify the following:

1. Exact manufacturer designation: I.1200.20.00.C.

2. Bearing construction: single-row ball slewing ring.

3. Gear configuration: internal gearing.

4. Outer diameter: 1198 mm.

5. Inner diameter: 985.6 mm.

6. Mounting pitch circles: 1170 mm and 1055 mm.

7. Mounting hole configuration: 16 outer and 24 inner holes.

8. Gear module: 8.

9. Number of gear teeth: 125.

10. Gear loading: compatibility with the drive system.

11. Bearing load capacity: verification of axial, radial and overturning loads.

12. Supporting structure: adequate rigidity and mounting surface accuracy.

13. Lubrication: compliance with manufacturer requirements.

14. Operating environment: contamination, moisture and temperature.

15. Technical drawing: complete dimensional compatibility.

The bearing should not be selected solely on the basis of its nominal size or external diameter.

Installation and Maintenance

Correct installation is essential for the reliable operation of a slewing ring bearing.

Preparation of Mounting Surfaces

Before installation, inspect the supporting surfaces.

They should meet the manufacturer's requirements for flatness, cleanliness and structural rigidity.

Incorrect support conditions may cause uneven load distribution and adversely affect bearing performance.

Mounting Bolts

Use mounting bolts selected according to the manufacturer's instructions and the equipment's engineering requirements.

Tightening procedures and torque values must be based on verified technical specifications.

Do not estimate bolt tightening torque from bearing dimensions alone.

Gear Engagement

The mating pinion must be correctly positioned relative to the internal gear teeth.

Check the required backlash, alignment and tooth contact conditions.

Incorrect gear engagement can cause excessive wear, vibration or damage.

Lubrication

The bearing raceways and gear teeth require appropriate lubrication according to the manufacturer's specifications.

Lubrication intervals depend on operating conditions, loads, environmental contamination and equipment usage.

Inspection

Regular maintenance should include inspection of:

• Bearing operation and rotational smoothness.

• Gear tooth condition.

• Mounting bolt security.

• Lubrication condition.

• Unusual noise or vibration.

• Excessive play or abnormal movement.

Maintenance procedures should follow the manufacturer's instructions and the equipment's service documentation.

Replacement and Interchangeability

When replacing the TGB I.1200.20.00.C bearing, verify the complete product designation and technical drawing.

A replacement bearing from another manufacturer may be considered only when all relevant parameters are compatible.

These include:

• Outer and inner diameters.

• Overall mounting geometry.

• Bearing construction.

• Mounting hole patterns.

• Gear module and tooth geometry.

• Gear position and pitch diameter.

• Axial and radial load capacities.

• Permissible overturning moments.

• Operating and lubrication requirements.

Matching outer diameter or gear module alone does not establish interchangeability.

No unverified OEM replacement numbers or equivalent bearings from other manufacturers have been assigned.

Alternative Product Names

The product may be searched for using the following designations:

• TGB I.1200.20.00.C

• I.1200.20.00.C TGB

• TGB I.1200.20.00.C slewing ring bearing

• TGB internal gear slewing bearing

• TGB I.20.C slewing ring

• TGB 1198 mm slewing bearing

• I.1200.20.00.C ball slewing ring

• TGB internal gear turntable bearing

• TGB Group Technologies slewing bearing

These are descriptive search variations and do not represent additional verified manufacturer part numbers.

Frequently Asked Questions - TGB I.1200.20.00.C

1. What is the TGB I.1200.20.00.C bearing?

It is a single-row ball slewing ring bearing with internal gearing, belonging to the TGB I.20.C series.

2. What is the outer diameter of the TGB I.1200.20.00.C?

The catalogue outer diameter is 1198 mm.

3. What is the inner diameter?

The published inner diameter is 985.6 mm.

4. Does the TGB I.1200.20.00.C have internal gear teeth?

Yes. The bearing features internal gearing with module 8 and 125 teeth.

5. How many mounting holes does the bearing have?

The catalogue specifies 16 outer mounting holes and 24 inner mounting holes.

6. What is the weight of the TGB I.1200.20.00.C?

The published catalogue weight is 83 kg. The actual shipping weight and packaging dimensions should be confirmed before arranging transport.

7. Can a slewing bearing from another manufacturer replace this model?

A replacement may be possible if the dimensions, mounting arrangements, gear geometry, load capacities and operating requirements are compatible. Similar product designations do not guarantee interchangeability.

8. Does the TGB I.1200.20.00.C require lubrication?

Yes. Lubrication should be carried out according to the manufacturer's technical instructions and the equipment's operating conditions.

TGB I.1200.20.00.C - Key Information

TGB I.1200.20.00.C is a single-row ball slewing ring bearing with internal gearing from the TGB I.20.C series. Its catalogue outer diameter is 1198 mm, inner diameter 985.6 mm and weight 83 kg. The internal gear features module 8 and 125 teeth. The bearing has 16 outer and 24 inner mounting holes and is intended for appropriately designed rotating mechanical assemblies.

The TGB I.1200.20.00.C bearing can be identified by its exact manufacturer designation at simmering.pl, a specialist supplier of industrial bearings, sealing components and technical spare parts based in Lublin, Poland.