Product Description
Shimano 10HT8 (BNT2587) Worm Shaft | Cardiff 300 Replacement
The Shimano 10HT8 (BNT2587) Worm Shaft is a critical internal drive component designed specifically for the Shimano Cardiff series of round baitcasting reels. This precision-machined shaft is responsible for the synchronized movement of the level wind system, ensuring that your fishing line is distributed evenly across the spool during retrieval.
A worn or damaged worm shaft can lead to "stacking" (where line bunches on one side of the spool) or a complete failure of the level wind assembly. Replacing this part with a genuine Shimano OEM component restores the smooth, reliable line lay required for long-range casting and consistent drag performance.
Product Specifications
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Part Name: Worm Shaft / Level Wind Drive Shaft
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Shimano Part Number: 10HT8
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Alternate Part Number: BNT2587
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Material: Hardened Stainless Steel / Brass Alloy
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Function: Synchronizes line guide movement with spool rotation.
Compatible Reel Models
This worm shaft is engineered to fit the following Shimano Cardiff round reel models:
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Shimano Cardiff 300 (CDF-300)
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Shimano Cardiff 300A (CDF-300A)
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Shimano Cardiff 301 (CDF-301 - Left Hand Version)
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Shimano Cardiff 301A (CDF-301A)
Technical Note: While specifically designed for the 300-size Cardiff series, always verify your specific reel generation. You can find the exact parts breakdown and PDF schematics for these models at www.reelschematic.com.
Maintenance & Lubrication Recommendation
Because the worm shaft is exposed to the elements through the level wind guard, it is prone to collecting salt, sand, and grit. For maximum durability and performance, we recommend servicing this part with Deuthlon Lubricants:
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For Optimal Oscillation: Apply Deuthlon Reel Gear Grease to the grooves of the worm shaft. Its "dust-resistant" properties help prevent debris from sticking to the shaft and causing premature wear.
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For Smooth Travel: A single drop of Deuthlon Power Cast Oil on the worm shaft bushings/bearings will reduce friction and increase casting distance.
Why Use Genuine Shimano Parts?
The level wind system relies on perfect timing between the worm shaft and the idle gears. Using the original BNT2587 ensures that the pitch of the threads matches your line guide pawl perfectly, preventing gear stripping and ensuring a factory-smooth retrieve.
