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Curved Tooth Couplings

Curved Tooth Couplings
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Curved Tooth Couplings

Product catalog summary
Introduction
This document provides a comprehensive overview of curved tooth couplings, a technology invented by Albert Tacke, highlighting their widespread use due to reliability and versatility.
Production Process
The production involves advanced machinery like gear slotting and tooth milling machines, ensuring high-quality standards and interchangeable components.
Product Range and Quality
Couplings are categorized into three groups based on constructional features to meet specific application demands, all adhering to strict quality standards.
Improvements
Recent enhancements include larger hub bore capacities, higher permissible angular misalignment, and a simplified product range for easier selection.
Lubrication
SB series couplings can be lubricated with oil or grease, with oil offering easier replacement. The design ensures lubrication even if the seal is damaged.
Availability and Customization
Basic designs are available from stock, with options for custom-made designs, including modified standard types and completely custom designs.
Quality Features of Construction Series
Different series like SB, SBk, and LBk offer features such as split housing, misalignment capacity, and compatibility with accessory equipment.
Technical Data and Specifications
Detailed technical data includes service factors, permissible loads, and misalignment capacities, along with equations for size determination and speed factors.
Service Factors and Size Determination
Service factors for various machinery types aid in selecting appropriate coupling sizes, with equations for continuous power and torque calculations provided.
Misalignment Considerations
Specific data on permissible angular misalignment and speed factors ensure optimal performance.
Conclusion
The document emphasizes the adaptability, quality, and technical specifications of curved tooth couplings for various industrial applications.
Specifications
Permissible angular misalignment varies by series, with SB-type allowing up to 1.5° per coupling half. Maximum speed capacity depends on misalignment, with a table of speed factors provided.
Procedures
Installation requires attention to dismounting dimension F for vertical installations and O-ring replacement. Torsional stiffness values are crucial for selection.
Norms and Recommendations
Higher misalignment capacities require special measures, and technical improvements may alter specifications.
Dimension Tables
Tables provide dimensions, maximum speeds, and other parameters for coupling sizes, including bore sizes, radial misalignment, and lubrication quantities.
Critical Information
Adhering to specified misalignment tolerances and speed capacities is crucial for optimal performance and longevity.
HYGUARD® Safety Couplings
HYGUARD® safety couplings prevent overloads and jams, suitable for various applications. They are easy to re-commission and comply with Directive 94/9/EC (ATEX) for explosive atmospheres.
Basic Designs
The B-design is compact for low-speed drives, while BW-types are for higher speeds. The BWL-series combines curved tooth couplings with the HYGUARD® safety system.
Safety and Re-commissioning
Features include a shear ring for safe release, with re-commissioning requiring a high-pressure pump and hydraulic oil.
Applications
Ideal for machines prone to overloads, with options for differential speed control and quick clamping with the TORLOC® version.
Technical Information and Compliance
Complies with ATEX for use in explosive atmospheres, with supplementary manuals for specific instructions.
Calculation Formulae
Formulas for bending critical speed, torsional stiffness, and other parameters ensure proper functioning and safety.
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Catalog excerpts

Curved Tooth Couplings-1

Tooth center distance

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Curved Tooth Couplings-2

The production process of the curved tooth couplings was invented by The nominal size of the coupling is no longer synonymouswith the maximum permissible hub bore.Օ Larger hub bore capacities allow a more favorable couplingsize selection. Higher permissible angular misalignment capacity providesadded safety in the event of shaft offset. Օ Precise and subtle size determination due to the applicationof service factors. Re-structured product range ensures simplified couplingselection. Albert Tacke more than 60 years ago andwas already patented in 1939. The worldwide use of the curved tooth coupling...

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Curved Tooth Couplings-3

The couplings of the SB series can either be lubricated withoil or with grease. The advantage of oil lubrication is that the lubricant can be replaced in a quicker and easier manner. On top of this, the SB coupling types have a larger space for the lubricant. Lubrication is ensured even in case of a damaged sealing. This equally applies to oil and grease lubrication. Irregardless of the quantity, special designs can be suppliedin any size. The distinction is made between modified stan- dard types and custom-made designs. Modified coupling models are mainly composed of elements from the basic...

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Curved Tooth Couplings-4

Technically complex designՕ Split housing with bolted-on covers Advanced cover design for high misalignment capacity Օ Misalignment capacity of 1.5Ѱper coupling half, for special designsup to 3ѰOptionally available for oil or grease lubrication Օ Low strain on seal rings due to optimum arrangement in the sleevecover Large lubricant space in leak-proof designՕLubrication is ensured, even with damaged seal ring Easy replacement of seal rings Օ Tooth tip centered, optionally available with cover centering Large tooth center distanceՕ Combinable with HYGUARD > safety couplings, brake disks, torquemetering...

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Curved Tooth Couplings-20

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Curved Tooth Couplings-37

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Curved Tooth Couplings-39

2 fastening screws perplate segment

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Curved Tooth Couplings-40

CouplingType Min. SpacerLengthL Oil Quantityfor Oil LubricationGrease Quantityfor Grease Lubrication min min SBL min min min Size per 10 mm tube length with L>L Spacerwith L=L Spacer with L=L per 10 mm tube length with L>L mmlitreslitreskgkg 30 750.0120.00160.0150.002 40 800.0120.00150.0150.0019 50 800.0220.00270.0300.0037 60 1000.0330.00330.0530.0053 70 1000.0380.00380.0580.0058 > min

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Curved Tooth Couplings-42

T1 per 10 mm tube length with L>L per 10 mm tube length with L>L Spacer with L=L Spacer withL=L mmNm/radNmmm/radkgm > 2 kgm > 2 kgkg30750.38 ׷ 10 > 6 186 10 > 6 0.004010.000112.170.1140800.92 ׷ 10 > per 10 mmtube lengthwith L>L per 10 mm tube length with L>L Spacer with L=L Spacer withL=L min per 10 mm tube length withL>L per 10 mm tube length withL>L Spacer with L=L Spacer withL=L mmNm/radNmmm/radkgm > 2 kgm > 2 kgkg32700.46 >

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Curved Tooth Couplings-43

SBG/SRG > T1 C > T2 SizeTorsional StiffnessC > 260235.6 ׷ 10 > 6 280299.4 10 > 6 300357.3 ׷ 10 > 6 Calculated acc. to the formula on page 51. 320458.5 10 > 6

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Curved Tooth Couplings-45

Fig. 1Fig. 2Fig. 3Fig. 4 Fig. 5Fig. 6Fig. 7Fig. 8 Fig.12345678 Utilization of spaceProductionInsensitiveness to damageOperation quality Axial positioning Transfer of forceInstallation, warmInstallation, cold Removal favorableneutralless favorable RENK Aktiengesellschaft, Rheine Works Phone: +4959717900 ׷ Fax: +495971790208and 79025645 >

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Curved Tooth Couplings-46

Fig. 1 Fig. 2Fig. 3 Fig. 4 1 Curved tooth coupling with spacerof CFP/ GFP. Flange shaft with gear teeth according to DIN 5480 to takeup axial displacement.2 Curved tooth coupling of verticaldesign for a water power plant,equipped for oil injection lubrication, can be engaged and disengaged at standstill. Gas-nitrided gear teeth. Shiftingdevice with hydraulic cylinder and monitoring sensors.3 Curved tooth coupling with HYGUARD > safety coupling andbrake disk, for vertical installation between motor and thruster. Gas-nitrided gear teeth. 4 Curved tooth coupling with inter-mediate shaft, pedestal...

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Curved Tooth Couplings-47

Fig. 5 Fig. 6 Fig. 7 Fig. 8Fig. 9 5 Curved tooth coupling for specialvehicles.6 Curved tooth coupling of short,double engagement constructionform.7 Curved tooth coupling with shear pin part, equipped for flowlubrication. 8 Curved tooth coupling electricallyinsulated.9 Curved tooth coupling coupling forrail vehicles. RENK Aktiengesellschaft, Rheine Works Phone: +4959717900 ׷ Fax: +495971790208and 79025647 >

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Curved Tooth Couplings-48

The basic type of the HYGUARD > HYGUARD > ή is a hydraulicsafety element to protectmachinery against overloads. In combination with curved tooth couplings, HYGUARD safety coupling isthe B-design. Due to the com- pact dimensions, this coupling can be combined with the mostdiverse drive elements withoutaffecting their torque transmis- sion capacity. The HYGUARD > works like a safety coupling with torque limitation. Therelease torque is adjustable andremains constant throughout the entire operation time. > ή couplingsleeve is equally suitable for clamping fixed as well as rotating elements. After...

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Curved Tooth Couplings-49

Two components are of essen-tial importance for safe release: the shear ring and the shear tube. The shear ring and theshaft are rigidly connected,whereas the shear tube is accommodated in the movable part. If the operation torque exceeds the pre-determinedvalue, the safety element startsto slide on the profiled surface. This results in a relative move- ment between the shaft andthe hub, with the shear ring cutting off the shear tube. Thesystem is depressurized within milliseconds and the connec- tion is released. HYGUARD > ή HYGUARD > is a versatilemachinery element and suitable for the most...

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Curved Tooth Couplings-51

1. Bending Critical Speed 4. Geometrical moment of inertia I Rough calculation of the bending critical speed ofintermediate shafts, spacers and hub sleevesn Applicable to the shaft: > 4 I > axial I > axial = d > k = 300 78.3 ׷ E 20.37Applicable to the spacer (tube): G > 4 1 ׷ l > n > k = bending critical speed, rpmn= operation speed, rpm E= module of elasticity = 20.6 10 > 4 - d > 4 I > a i axial = d > 4 N/mm > 2 20.37 G > 1 = weight per 1 mm of length, kg/mm (see item 5) l > 4 = tooth center distance, mm I > axial = axial geometrical moment of inertia, mm I > axial = (see item 4)permissible...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.