Technology Features of Shimano 2025 Aldebaran DC 31XG LEFT
HAGANE
“HAGANE” is more than just a material name; it’s a design philosophy centered around creating reels that offer unmatched longevity and smoothness. The term "HAGANE" itself, which means "steel" in Japanese, symbolizes strength and resilience. However, in Shimano's context, it transcends traditional interpretations, representing a suite of advanced technologies aimed at enhancing performance and durability. In other words, when they say "HAGANE", they do not actually mean that HAGANE(= steel) is used. “HAGANE” promises robustness that can be used with peace of mind even in the harshest of conditions, an unchanging, exquisite winding feel, and winding power that exceeds the imagination."HAGANE Gear" or "HAGANE Body" is Shimano's engineering concept and philosophy.
MICRO MODULE GEAR
The gear teeth surfaces in the MICRO MODULE GEAR are finer and mesh more closely together than traditional gears, resulting in minimal power loss and a smooth, powerful winding experience. Additionally, the increased number of meshing teeth provides greater strength compared to conventional gears. This unique Shimano gear system achieves a balance of smoothness and durability.
X-SHIP
X-SHIP features an enlarged drive gear, optimal positioning of the pinion and drive gears, and two-point support for the pinion gear with bearings. This robust gear engagement maintains smooth and efficient reeling even under heavy loads.
MGL SPOOL Ⅳ
The Magnumlite Spool III is a spool that achieves lightweight and low inertia through significant thinning of its structure. It rotates smoothly immediately after release, providing an exhilarating casting feel, enhanced long-distance casting performance, and improved trouble-free operation.
The newly developed Magnumlite Spool IV builds upon the Magnumlite Spool III, which pursued ultra-low inertia through extreme thinning. By adopting a reverse-tapered spool shape, it achieves an ideal line-lay structure.
The balance of the spool after winding the line has a significant impact on casting performance. A well-balanced spool minimizes rotational wobble and reduces spool vibration during casting, allowing for exceptional casting distance and an incredibly smooth casting experience.
S3D SPOOL
The S3D SPOOL features an entirely redesigned cutting method, significantly enhancing the spool's precision. As a result, this design improves the smoothness and reduces vibrations during casting, leading to a quieter and more stable performance.
SUPER FREE SPOOL
SUPER FREE SPOOL is a system where the spool shaft is supported by only two bearings when the reel's clutch is disengaged. This design minimizes spool wobble and eliminates rotational resistance, allowing for exceptionally smooth and light spool free performance.
SILENT TUNE
In baitcasting reels, high spool rotation can cause vibrations and noise. SILENT TUNE reduces these by applying light pressure to the spool bearings with springs, improving the reel's quietness during casts and enhancing spool rotation startup.
I-DC5
The I-DC5 is a DC braking system that balances long casting performance with backlash prevention. It allows for precise brake adjustments using a three-stage internal dial, tailored to the type of line used (nylon, fluorocarbon, or PE), and a five-stage external brake dial to fine-tune the braking force. This system enables brake settings that maximize the characteristics of each line type. By replacing the previously assembled magnets with a one-piece four-pole magnetized ring, the effective magnetic force area is increased, resulting in a 30% boost in braking power. Additionally, by introducing a momentary no-brake zone immediately after release of casting, the maximum rotational speed is improved by approximately 12%, enabling longer, more stable casts.
SA-RB
A-RB bearings feature a special anti-corrosion treatment that significantly improves their rust resistance. The SA-RB takes this further by sealing the sides with anti-corrosion materials, greatly reducing salt crystallization and salt damage inside the bearing.
EXCITING DRAG SOUND
EXCITING DRAG SOUND is a feature that produces a sound when the line is pulled out from the spool by a fish. Unlike traditional baitcasting reels, which typically do not emit a drag sound, this feature enhances the angler's experience by stimulating their senses, making the fight with the fish even more enjoyable.
Shimano 2025 Aldebaran DC Spec Chart
Shimano 2025 Aldebaran DC Line-up
| Line-up | Year | Salt or Fresh | Weight（ｇ） | Gear ratio | Retrieve（cm/crank） | Max drag (kg) | Mono line cap. (lb-m) | Braided line cap. (lb-m) | Handle Arm（mm） | Spool diameter (mm) | Spool width (mm) | Bearing (Ball/Roller) | JAN Code |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 30HG RIGHT | 2025 | Saltwater OK | 150 | 7.8 | 73 | 4 | 8-100, 10-80, 12-65 | 20-185, 30-120, 40-90 | 40 | 30 | 19 | 10/1 | 4969363047830 |
| 31HG LEFT | 2025 | Saltwater OK | 150 | 7.8 | 73 | 4 | 8-100, 10-80, 12-65 | 20-185, 30-120, 40-90 | 40 | 30 | 19 | 10/1 | 4969363047847 |
| 30XG RIGHT | 2025 | Saltwater OK | 150 | 8.9 | 84 | 4 | 8-100, 10-80, 12-65 | 20-185, 30-120, 40-90 | 40 | 30 | 19 | 10/1 | 4969363047854 |
| 31XG LEFT | 2025 | Saltwater OK | 150 | 8.9 | 84 | 4 | 8-100, 10-80, 12-65 | 20-185, 30-120, 40-90 | 40 | 30 | 19 | 10/1 | 4969363047861 |
Specifications in Pound-Yard Notation
| Line-up | Year | Salt or Fresh | Weight（oz） | Gear ratio | Retrieve（in/crank） | Max drag (lb) | Mono line cap. (lb-yd) | Braided line cap. (lb-yd) | Handle Arm（in） | Spool diameter (in) | Spool width (in) | Bearing (Ball/Roller) | JAN Code |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 30HG RIGHT | 2025 | Saltwater OK | 5.4 | 7.8 | 28.7 | 8.9 | 8-110, 10-90, 12-70 | 20-205, 30-130, 40-100 | 1.57 | 1.18 | 0.75 | 10/1 | 4969363047830 |
| 31HG LEFT | 2025 | Saltwater OK | 5.4 | 7.8 | 28.7 | 8.9 | 8-110, 10-90, 12-70 | 20-205, 30-130, 40-100 | 1.57 | 1.18 | 0.75 | 10/1 | 4969363047847 |
| 30XG RIGHT | 2025 | Saltwater OK | 5.4 | 8.9 | 33.1 | 8.9 | 8-110, 10-90, 12-70 | 20-205, 30-130, 40-100 | 1.57 | 1.18 | 0.75 | 10/1 | 4969363047854 |
| 31XG LEFT | 2025 | Saltwater OK | 5.4 | 8.9 | 33.1 | 8.9 | 8-110, 10-90, 12-70 | 20-205, 30-130, 40-100 | 1.57 | 1.18 | 0.75 | 10/1 | 4969363047861 |