Tec FCNDK40 25:1 Worm Gearbox – 18mm Bore, 71B5 Input

This Tec FCNDK40 25:1 worm gearbox is a modular right-angle reduction unit designed for applications needing balanced reduction with practical output speed and useful torque increase. With its 18mm hollow bore output and 71B5 IEC motor input, it suits compact conveyors, transfer systems, metering equipment, and general automation where dependable mechanical reduction and compact layout are important.

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Gearbox Overview

This gearbox uses the TEC FCNDK modular format, allowing straightforward matching to IEC motors while keeping a compact right-angle footprint. The 25:1 reduction is a practical choice where buyers want an output speed of around 56rpm from a 4 pole motor, together with a 18mm hollow bore and 71B5 motor interface.

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Why Choose This Configuration?

This mid-range ratio is commonly chosen when buyers need a balanced reduction that slows the output without making the machine excessively slow. It is a strong all-round option for general machinery, conveyors, packaging equipment, and process systems.

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Technical Details

Gearbox series: Tec FCNDK
Gearbox size: FCNDK40
Gear ratio: 25:1
Nominal output speed: 56rpm (with 4 pole 1400rpm motor, sf = 1)
Rated input power: 0.30kW (catalogue performance figure, sf = 1)
Nominal output torque: 38Nm
Maximum radial load Fr2: 1964N
Output bore: 18mm hollow bore
Motor input: 71B5 IEC flange input
Housing material: pressure die-cast aluminium housing
Mounting positions: B3, B6, B7, B8, V5, V6
Lubrication: supplied with synthetic long-life oil grade ISO VG 320 and does not require a breather plug
Approximate gearbox weight: 2.3kg

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Internal Links & Compatible Options

Same gearbox size and ratio, different motor inputs: jump to the Tec FCNDK40 25:1 Worm Gearbox input option you need.

Need a different ratio? Explore the closest ratios around 25:1 in the FCNDK40 size.

Need a different gearbox size? Explore nearby 25:1 FCNDK sizes.

Helpful calculators:
Gearbox Ratio & Speed Calculator |
Output Torque Calculator

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Frequently Asked Questions

What output speed does a 25:1 FCNDK gearbox give?

In the TEC catalogue performance table, this FCNDK40 25:1 configuration is shown with a nominal output speed of about 56rpm when used with a 4 pole 1400rpm motor at service factor 1.

What is this gearbox commonly used for?

This gearbox is commonly used for compact conveyors, transfer systems, metering equipment, and general automation, and other machinery needing balanced reduction with practical output speed and useful torque increase in a compact right-angle drive.

Is the housing aluminium or cast iron?

For FCNDK40, the catalogue lists the housing as pressure die-cast aluminium housing.

Does this gearbox come with lubricant?

According to the TEC FCNDK catalogue summary, this size is supplied with synthetic long-life oil grade ISO VG 320 and does not require a breather plug.

Can I fit different IEC motor inputs to the FCNDK range?

Yes. The FCNDK range is based on a modular format system and is designed to accept IEC motor inputs. This product is configured for 71B5, and nearby compatible options are linked above.