Multiquip 21212 Spider Kit 6 Blade Splined - OEM Replacement Part for Trowels

The spider kit assembly is the central rotating component that connects and controls all six trowel arms on your power trowel, directly affecting finish quality and machine stability. When trowel arm bushings exceed 1/8" (3.2mm) of travel at the arm tip, or when the spider exhibits bent trowel arms, this complete 6-blade splined spider kit restores proper operation and prevents uneven concrete swirls, bouncing, or rolling during finishing.

According to Multiquip maintenance procedures, bent trowel arms must be replaced immediately, even if only slightly damaged. The spider assembly is critical for maintaining consistent blade pitch angles across all arms—a requirement for uniform concrete finishing. When replacing spider components, all trowel arm bushings should be replaced simultaneously to ensure balanced operation. During installation, blades must be torqued to 9 ft-lbs and oriented correctly for the direction of rotation.

This splined spider kit is engineered for machines requiring 6-blade configurations and includes the complete spider plate assembly. Regular inspection of the spider for tightness and bent arms prevents costly finish defects and extends trowel service life.

Compatible with the following Multiquip models:

• STX55J6

Genuine Multiquip OEM part, sold by an authorized dealer.