Products Description
Shindaiwa B45/B450 Clutch Drum 11T – Complete Clutch Drum Assembly
Genuine OEM & Aftermarket Replacement Clutch Drum for Shindaiwa Brushcutters
This 11T clutch drum is a direct replacement for the clutch and chain drive system on Shindaiwa B45, B450, and compatible brushcutter models. The clutch drum is a critical component that transfers engine power to the cutting attachment, featuring an 11-tooth (11T) sprocket configuration for efficient power transmission. The drum is manufactured from high-quality steel, offering durability and resistance to wear under the high mechanical stresses of brushcutter operation . Replaces OEM part numbers 20021-31200, A055000020, and 17500544730 for exact fitment and reliable performance.
Technical Profiles & Materials
OEM-Spec Replacement Fitment – Direct replacement for Shindaiwa B45, B450, and T450 brushcutters. Replaces OEM part numbers 20021-31200 and A055000020 . Also available as genuine OEM part 17500544730 for guaranteed compatibility .
High-Quality Steel Construction – Manufactured from durable steel with a brushed, matte finish, providing exceptional durability and resistance to wear . Ideal for the high mechanical stresses of professional brushcutter operation .
Efficient Power Transfer – Designed to engage and disengage the engine from the cutting mechanism, facilitating smooth power transfer from the engine to the cutting attachment for optimal cutting performance .
Wide Model Compatibility – Compatible with Shindaiwa B45, B450, B450AUS, B450EMC, B450F, B450R, B452, B452R, and T450 brushcutters . Complete clutch drum kits are also available for comprehensive service .
Easy Installation – Circular shape with strategically placed mounting holes allows for stable and balanced operation. Simple replacement with basic hand tools . Circlip installation is also compatible with B445, B450F, and B451 models .
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | OEM Part Nos. | 20021-31200, A055000020, 17500544730 |
| 2 | Sprocket Teeth | 11T (11 teeth) |
| 3 | Material | High-quality steel |
| 4 | Finish | Brushed, matte |
| 5 | Compatible Models | Shindaiwa B45, B450, B450AUS, B450EMC, B450F, B450R, B452, B452R, T450 |
| 6 | Also Compatible | B445, B451 (circlip installation) |
| 7 | Alternative OEM Ref. | 22945-61100, 20021-51102 |
| 8 | Unit of Sale | 1 piece or complete kit |
Products Application
Clutch System Overhaul
Direct replacement when the original clutch drum becomes worn, damaged, or fails to transfer power effectively. A worn clutch drum can cause the cutting head to slip under load, fail to engage, or produce unusual noise. This 11T drum restores smooth power transmission and reliable cutting performance on Shindaiwa B45 and B450 brushcutters.
Professional Landscaping & Grounds Maintenance
For landscaping contractors and grounds maintenance crews operating Shindaiwa B45 and B450 brushcutters, replacing a worn clutch drum ensures consistent power delivery and reduced downtime during demanding trimming and brush clearing tasks.
Workshop & Preventative Maintenance
For repair centres servicing Shindaiwa brushcutters, the 11T clutch drum simplifies repairs by providing a direct replacement component. Available as an individual part or as part of a complete clutch drum kit, ensuring all related components are renewed simultaneously . When replacing the drum, inspect the clutch shoes and springs for wear.
Quality and Craftsmanship Details
Products Package
About Us
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FAQ
Q: How do I confirm this 11T clutch drum fits my Shindaiwa B45 or B450?
A: Check your machine model number on the identification plate. This drum fits Shindaiwa B45, B450, B450AUS, B450EMC, B450F, B450R, B452, B452R, and T450 models . It replaces OEM part numbers 20021-31200 and A055000020. For B445 and B451, the circlip installation is compatible . The 11T sprocket configuration must match your existing drum.
Q: What are the symptoms that indicate the clutch drum needs replacing
A: Common symptoms include the cutting head slipping under load, failure to engage when throttle is applied, unusual noise from the clutch area, or visible wear and scoring on the drum surface. A worn drum can cause poor power transfer and reduced cutting efficiency.
Q: Is the 11T clutch drum available as a complete kit?
A: Yes, complete clutch drum kits are available (e.g., A556001790) that include the drum and associated components for a full clutch system service . This ensures all wear-prone parts are renewed simultaneously and prevents premature failure of new components.
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