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Spool Bearing Differences – Core vs Edge vs Apex Compared
Spool Bearing Differences – Core vs Edge vs Apex Compared
Our spool bearings differ in material composition, ball quality, cage system, ABEC precision class, and optimal tuning for your casting weight. Each class is designed for a specific application. The decisive factor is not just the ABEC rating, but the entire construction and its tuning to your setup.
Apex – ABEC 9 with S30 Ceramic Balls and PEEK Ribbon Cage
Apex bearings are our uncompromising high-performance option. They consist of ABEC 9 precision-made stainless steel rings, equipped with S30 ceramic balls and a PEEK (Polyether Ether Ketone) ribbon cage.
S30 ceramic balls enable extremely low friction and very high speeds. The PEEK ribbon retainer is a high-performance cage that ensures stability, temperature resistance, and reliable ball guidance at very high speeds.
- ABEC 9 precision standard
- S30 ceramic balls for maximum rotational pleasure
- PEEK ribbon cage for stability at high speeds & minimal friction
- Very fast spool acceleration
Thanks to this design, the spool of your baitcasting reel starts very quickly and reaches extremely high speeds, especially in the lower casting weight range.
Sweet spot casting weight: 2 to 60 g
If you mostly fish well above this range, a slightly more robustly tuned design makes sense. In this case, switching to the Edge class is recommended.
Edge – ABEC 9 Hybrid Ceramic Bearings with S25 Balls
Edge bearings are also based on an ABEC 9 precision standard. They use S25 ceramic balls combined with precision-made steel rings and a Japanese ribbon retainer.
Compared to Apex, Edge is tuned to be a bit more versatile. The design offers high speed capability combined with more mechanical stability for a broader range of applications.
- ABEC 9 precision standard
- S25 ceramic balls for high speeds
- Japanese ribbon retainer for stable ball guidance
- Balanced performance tuning
Edge bearings are available in two variants:
- With Orange Seal: Additional protection against dirt and moisture
- Without Seal: Minimal resistance for maximum rotational pleasure
Sweet spot casting weight: 5 to 100 g
If your setup regularly exceeds this range significantly, the Core class is the technically more suitable choice.
Core – ABEC 5 Stainless Steel Bearings for High Load
Core bearings consist of ABEC 5 precision-made stainless steel bearings with a stable ball and cage construction. They are designed for durability, continuous use, and consistent performance.
ABEC 5 here does not mean lower quality but a more robust tuning compared to high-speed hybrid ceramic bearings.
- ABEC 5 precision standard
- Robust stainless steel construction
- High mechanical load capacity
- Consistent performance under load
Sweet spot casting weight: 8 g to over 200 g
The Casting Weight Decides
All our spool bearings are high-quality manufactured and designed for high speeds. The crucial difference lies in the tuning to your actual lure spectrum.
Those who mostly fish very light lures benefit from maximum startup dynamics. Those covering a broader spectrum should choose a more versatile tuning. Those who consistently cast heavy should rely on robust stability.
The best performance arises when bearing class and casting weight match.
RL-TNG Complete Ball Bearing Tuning Kit for Shimano 22 SLX DC 71 XT
RL-TNG Complete Ball Bearing Tuning Kit for Shimano 22 SLX DC 71 XT
The RL-TNG Complete Bearing Tuning Kit for Shimano 22 SLX DC XT is the ultimate solution when you want to do a thorough job on your reel. Here, every single bearing is replaced, including the wormshaft and pinion gear, where Shimano still uses plastic bushings from the factory. The result is smoother operation, more control, and an SLX DC XT that finally feels clean and smooth. 🎯
- 11 bearings in the set, covering every bearing position on the reel.
- Wormshaft and pinion gear upgrade, which removes the plastic bushings and makes the operation noticeably smoother.
- Highspeed bearings on spool and gear, for better free spool and more efficient power transfer.
Complete Bearing Upgrade for Shimano 22 SLX DC XT – why it’s worth it
Many only replace the spool bearings, but that’s only half the story. As long as the wormshaft, pinion gear, and drive gear run with the original parts, there’s always potential left unused. With the RL-TNG Complete Bearing Tuning Kit for Shimano 22 SLX DC XT, everything runs smoothly together, quieter, more controlled, and noticeably more efficient.
- ✅ Smoother operation when cranking and casting
- ✅ Consistent free spool without rattling or resistance
- ✅ Less effort during longer sessions
- ✅ Significantly less wear in the gear system
RL-TNG Complete Bearing Tuning Kit – included bearings (11 pieces)
- 2× Highspeed spool bearings, for quick spool start and clean free spin.
- 1× Wormshaft hybrid bearing, replaces the original plastic bushing for smoother feed.
- 1× Highspeed pinion gear bearing, replaces the plastic bushing and ensures smooth main shaft operation.
- 1× Highspeed drive gear support bearing, stabilizes the gear under load.
- 2× Stainless steel drive gear support bearings, ensure clean and durable rotation.
- 4× Stainless steel knob bearings, play-free, controlled, and noticeably higher quality in the grip.
Total: 11 bearings, no placeholders, no leftover factory parts.
Complete Bearing Kit – positions & quick installation guide
- Open the reel and remove all original bearings and plastic bushings.
- Install bearings precisely in their positions, especially work carefully on wormshaft and pinion gear.
- Lightly oil, check function, so everything runs freely and without tension.
Pro tip: Especially for DC reels, only lightly oil highspeed bearings, otherwise the free spool suffers.
Technical highlights – RL-TNG Bearing Kit
- Highspeed bearings, for quick start and smooth operation.
- Hybrid bearing on wormshaft, for smooth feed instead of plastic friction.
- Stainless steel bearings, durable, stable, and suitable for everyday use.
Compatibility – Shimano 22 SLX DC XT
- Fits:
- 22 SLX DC XT 70
- 22 SLX DC XT 70HG
- 22 SLX DC XT 70XG
- 22 SLX DC XT 71
- 22 SLX DC XT 71HG
- 22 SLX DC XT 71XG
Accessories for RL-TNG Complete Bearing Tuning Kit for Shimano 22 SLX DC XT
Conclusion – RL-TNG Complete Bearing Tuning Kit for Shimano 22 SLX DC XT
If you want to not just pimp your SLX DC XT but technically optimize it properly, this set is just right. 11 bearings, every position replaced, smooth operation and noticeable control, from the first cast to the last drill. 😎