Swing rough or upper structure play developing on your 306E2 or 307E? A worn 306E2 slew ring develops ball groove wear that increases upper-lower structural play and creates the vibration that accelerates pinion wear. RITO supplies this compact slew ring to restore tight, smooth upper structure rotation on your Cat 306-307 series mini excavator.
Item NO.:
306E2 Slewing RingOrder(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In Stock306E2 Slewing Ring for Caterpillar 306E2, 306E, 307E2 and 307E mini excavators. The 306E2 slew ring is a compact-format unit designed for the tight envelope of the 6-7 tonne Cat mini excavator class. Ball groove hardness, tooth quality and seal integrity are all critical to service life in the high-cycle swing duty typical of mini excavator urban and landscaping applications.
| Part Number | 306E2 Slewing Ring |
|---|---|
| Part Name | Slewing Ring / Swing Bearing / Turntable |
| Compatible Brand | Caterpillar |
| Applicable Models | 306E2, 306E, 307E2, 307E Excavator |
| Application | Upper-to-lower structure pivot bearing and swing gear ring on Cat 306E2 / 307E mini excavator |
| Material | 42CrMo alloy steel, induction-hardened ball groove |
| Product Color | Black primer coat |
| Working Temperature | -30°C~+80°C |
| Key Function | Supports 306E2/307E upper structure weight and transmits swing torque through internal gear teeth |
| Condition | 100% New Aftermarket OEM Quality |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
Ring dimensions sized for the 306E2 and 307E compact upper structure envelope, fitting within the existing lower carrier mounting bore without housing modification.
Ball groove hardness and groove radius selected to resist the accelerated fatigue that comes from the high swing cycle rate typical of mini excavator trench and landscaping work.
Internal gear teeth cut to Cat 306E2 module and tooth count for correct mesh with the swing motor pinion, maintaining quiet, backlash-free cab rotation in confined site work.
Single slew ring covers 306E2, 306E, 307E2 and 307E, simplifying procurement for operators running mixed Cat mini excavator fleets.
FAQ
Q: What are the symptoms of a worn 306E2 slew ring?
A: Upper structure can be rocked by hand with the swing brake on, audible ball-on-groove rumble during slow swing rotation, pinion showing accelerated tooth wear from misaligned ring gear, and grease leaking around the outer lip seal.
Q: Is the 306E2 slew ring the same as the 307E2?
A: The 306E2 and 307E2 use the same slew ring specification. Confirm inner bore, outer diameter and gear tooth count when ordering to verify exact dimensional match.
Q: What grease should I use in the 306E2 slew ring after replacement?
A: Use lithium-complex or moly-EP grease as specified in the Caterpillar 306E2 maintenance manual. Apply until fresh grease purges from the lower seal, then rotate the upper structure fully to distribute grease to all balls.
Q: How to confirm this slew ring fits my 306E2?
A: Match inner bore, outer diameter, bolt count, bolt-circle diameters and internal gear tooth count against the existing ring. Provide the 306E2 serial number to our team for cross-reference.
Q: What quality options are available?
A: We provide original, OEM and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
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