Tec FCNDK90 40:1 Worm Gearbox – 35mm Bore, 90B5 Input

Built around the FCNDK90 modular worm gearbox platform, this 40:1 version gives buyers a compact right-angle drive with 35mm 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 FCNDK90 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 35mm output bore are already specified, while the 40:1 ratio delivers approximately 35rpm 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: FCNDK90
Gear ratio: 40:1
Nominal output speed: 35rpm (with 4 pole 1400rpm motor, sf = 1)
Rated input power: 1.80kW (catalogue performance figure, sf = 1)
Nominal output torque: 363Nm
Maximum radial load Fr2: 5383N
Output bore: 35mm 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: 13kg

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Internal Links & Compatible Options

Same gearbox size and ratio, different motor inputs: jump to the Tec FCNDK90 40:1 Worm Gearbox input option you need.

Need a different ratio? Explore the closest ratios around 40:1 in the FCNDK90 size.

Need a different gearbox size? Explore nearby 40:1 FCNDK sizes.

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

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Frequently Asked Questions

What output speed does a 40:1 FCNDK gearbox give?

In the TEC catalogue performance table, this FCNDK90 40:1 configuration is shown with a nominal output speed of about 35rpm 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 FCNDK90, 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.