Product Description
Shimano 10NXH Idle Gear (B) (TGT0586) | Large Tekota Drive Train
The Shimano 10NXH Idle Gear (B) (TGT0586) is a critical internal component found in the larger frame sizes of the Shimano Tekota series. It serves as a middle link in the transmission chain that transfers rotational power from the main drive gear to the level wind system and the line counter mechanism.
Precision-molded from a specialized high-impact polymer, this gear acts as a "mechanical fuse." It is designed to be tough enough to handle heavy trolling loads but is engineered to fail (strip its teeth) if the level wind becomes severely jammed by debris or a line tangle. This intentional failure point protects the much more expensive metal drive gears and the worm shaft from catastrophic damage.
Product Specifications
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Part Name: Idle Gear (B)
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Shimano Part Number: 10NXH
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Alternate Part Number: TGT0586
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Material: Reinforced Industrial Polymer (Nylon/Acetal)
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Function: Synchronizes the drive train with the level wind and line counter.
Compatible Reel Models
The 10NXH (TGT0586) is sized specifically for the high-capacity, heavy-duty Tekota frames. It is a direct fit for:
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Shimano Tekota 700 (TEK700)
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Shimano Tekota 700LC (Line Counter)
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Shimano Tekota 800 (TEK800)
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Shimano Tekota 800LC (Line Counter)
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Shimano Tekota 700LCM / 800LCM (Metric models)
Technical Note: This gear is physically larger than the TGT0533 (10NXF) used in the Tekota 500/600 series. While they perform the same function, they are not interchangeable. Ensure your reel is a 700 or 800 size before purchasing.
Maintenance & Lubrication Recommendation
Since Idle Gear (B) is made of a high-density polymer, it requires lubricants that will not degrade the plastic or cause it to swell over time. We recommend Deuthlon Lubricants:
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For the Gear Teeth: Apply a light, even coating of Deuthlon Reel Gear Grease. This grease is safe for plastics and provides a "tacky" moisture barrier that ensures the gear train stays silent and smooth, even during the high-speed retrieves common in salmon or lake trout trolling.
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For the Support Pin: Apply a single drop of Deuthlon Power Cast Oil to the Idle Gear B Shaft (TGT0587). This reduces rotational friction, allowing the entire level wind system to operate with less effort.
Why Choose Genuine Shimano 10NXH?
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Factory Timing: The tooth count and pitch are perfectly calibrated to ensure your Line Counter remains accurate. Aftermarket gears can cause the counter to "drift" over long distances.
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Material Integrity: Shimano's specific polymer blend is designed to resist becoming brittle due to the temperature fluctuations encountered on open water.
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Safety Buffer: Using the OEM part ensures the gear will strip when it's supposed to, saving your reel's frame and main gears from being twisted during a jam.
