Description
NIS FCL 280 Flexible Flanged Shaft Coupling
The most popular flexible shaft coupling in Japan.
Compliant with JIS B 1452-1991 “Flexible Flanged Shaft Couplings.”
Features FCL 280
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Simple structure consisting of flanges and coupling bolts, allowing easy installation
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Bushings can be replaced by removing only the coupling bolts, ensuring quick and easy maintenance
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Accommodates shaft misalignment, such as:
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Parallel offset misalignment (Eccentricity)
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Angular misalignment
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Reduces noise by absorbing torsional vibration
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Does not transmit thrust load
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Available in two types:
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FCL (Cast Iron)
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(Other types, if applicable)
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Product Standards FCL 280
This flexible flanged shaft coupling complies with JIS B 1452-1991.
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Allowable run-out between the outer diameter of the joint and the shaft bore center: not more than 0.03 mm
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Allowable run-out of the joint surface near the outer diameter
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Tolerances for:
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Bolt hole pitch circle diameter (Bolt Hole PCD)
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Bushing insertion hole pitch circle diameter
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Pitch
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Run-out relative to the shaft bore center
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Alignment Adjustment FCL 280
Although the flexible flanged shaft coupling permits misalignment while transmitting torque,
exceeding the allowable misalignment may cause vibration or significantly shorten service life.
Therefore, proper alignment adjustment is essential.
Shaft misalignment includes:
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Parallel offset misalignment (Eccentricity)
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Angular misalignment
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Axial shaft movement (End Play)
The shaft alignment should be adjusted so that it remains within the allowable values specified in the Dimensions / Performance Table.
The allowable misalignment values shown in the table apply only when one type of misalignment occurs independently.
If two or more types of misalignment occur simultaneously, the allowable values must be reduced by half.
Misalignment may occur not only during installation, but also due to vibration, thermal expansion, or bearing wear during operation.
Therefore, it is recommended to keep the misalignment to one-third or less of the allowable value.
Types of Misalignment FCL 280
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Parallel Offset Misalignment (Eccentricity)
Why Choose Bearings Specialist Co., Ltd.? Your Trusted Partner for Bearings & Power Transmission.
Established in Thailand in 1999, Bearings Specialist Co., Ltd. has become a leading supplier of high-quality bearings and power transmission components for the automotive and industrial sectors. While we are not a direct distributor for every specific item our strength lies in our extensive distributorships with globally recognized brands, including TIMKEN, REXNORD, RENOLD, OPTIBELT, NSK, NIS, FENNER, FALK, and MOMENTUM.
Our comprehensive product range serves diverse industries such as Cement, Construction, Food & Beverage, Heavy Equipment, Mining, Oil & Gas, Palm Oil, Power Plant, Pulp & Paper, Semiconductor Manufacturing, and Steel. We supply and distribute a wide selection of Bearings, Transmission and Conveyor Chains, Oil Seals, Transmission Belts and Pulleys, Shaft Couplings, Gear Drives, Maintenance Tools, and more.
Our commitment to providing reliable solutions and exceptional service has been the key to our success. We strive to be your preferred business partner by deeply understanding your applications and delivering value through our products and expertise. Customer satisfaction is our top priority.
