Tec FCNDK75 50:1 Worm Gearbox – 28mm Bore, 90B5 Input

Built around the FCNDK75 modular worm gearbox platform, this 50:1 version gives buyers a compact right-angle drive with 28mm hollow bore output and 90B5 motor input compatibility. It is commonly selected for feed screws, heavier conveyors, mixers, and process machinery requiring stronger torque output where slower output speed with stronger torque multiplication is needed without overcomplicating the drive layout.

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Gearbox Overview

The FCNDK75 size sits in the heavy part of the range and uses a pressure die-cast aluminium housing. In this configuration, the gearbox is suited to installations where a 90B5 motor input and 28mm output bore are already specified, while the 50:1 ratio delivers approximately 28rpm output speed from a 4 pole 1400rpm motor.

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Why Choose This Configuration?

This higher-ratio version is normally selected where the application needs stronger torque multiplication and slower shaft speed than lower-ratio options can provide. It works well for feeders, mixers, transfer drives, and machinery with more demanding load conditions.

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Technical Details

Gearbox series: Tec FCNDK
Gearbox size: FCNDK75
Gear ratio: 50:1
Nominal output speed: 28rpm (with 4 pole 1400rpm motor, sf = 1)
Rated input power: 0.90kW (catalogue performance figure, sf = 1)
Nominal output torque: 206Nm
Maximum radial load Fr2: 5241N
Output bore: 28mm hollow bore
Motor input: 90B5 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: 9kg

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Internal Links & Compatible Options

Same gearbox size and ratio, different motor inputs: jump to the Tec FCNDK75 50:1 Worm Gearbox input option you need.

Need a different ratio? Explore the closest ratios around 50:1 in the FCNDK75 size.

Need a different gearbox size? Explore nearby 50:1 FCNDK sizes.

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

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Frequently Asked Questions

What output speed does a 50:1 FCNDK gearbox give?

In the TEC catalogue performance table, this FCNDK75 50:1 configuration is shown with a nominal output speed of about 28rpm 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 feed screws, heavier conveyors, mixers, and process machinery requiring stronger torque output, and other machinery needing slower output speed with stronger torque multiplication in a compact right-angle drive.

Is the housing aluminium or cast iron?

For FCNDK75, 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 90B5, and nearby compatible options are linked above.