Upper structure wobbling during swing or slew ring making grinding noises on your ZX200? A worn 9169646 slew ring loses ball groove geometry, increasing upper-lower structure gap and causing the cab to rock during rotation. RITO's heavy-duty slew ring restores the rigid, smooth connection between the upper and lower structures of your ZX200.
Item NO.:
9169646-OTOrder(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In Stock9169646 Slewing Ring (Swing Bearing / Turntable) for Hitachi ZX200 excavator. The slew ring simultaneously carries the full weight of the upper structure, transmits swing torque through its gear teeth and seals hydraulic and electrical connections between the upper and lower bodies. All three functions depend on ball groove geometry, gear tooth accuracy and seal integrity.
| Part Number | 9169646 |
|---|---|
| Part Name | Slewing Ring / Swing Bearing / Turntable |
| Compatible Brand | Hitachi |
| Applicable Models | ZX200 Excavator |
| Application | Upper-to-lower structure pivot bearing and swing gear ring on ZX200 |
| Material | 42CrMo alloy steel inner and outer rings, through-hardened ball groove |
| Product Color | Black primer coat |
| Working Temperature | -30°C~+80°C |
| Key Function | Supports upper structure weight, transmits swing torque and seals the centre joint passage |
| Condition | 100% New Aftermarket OEM Quality |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
Ball groove surface induction-hardened to HRC 55-60, providing high Hertz contact stress capacity that resists brinelling under the static weight of the ZX200 upper structure.
External swing gear teeth cut and heat-treated to mesh accurately with the swing pinion, ensuring smooth torque transfer without backlash jump.
Upper and lower labyrinth seals retain grease in the ball groove circuit while excluding abrasive soil contamination that accelerates ball and groove wear.
Inner and outer ring bolt circles machined to OEM coordinates for ZX200, ensuring correct alignment of the swing pinion centreline after installation.
FAQ
Q: How do I know when the 9169646 slew ring on my ZX200 needs replacing?
A: Measure upper structure vertical play with a dial gauge on the counterweight. Play exceeding 1.5-2 mm indicates ball groove wear. Also listen for rumbling during slow swing and check for gear tooth chipping on the external teeth.
Q: How often should the 9169646 slew ring be greased?
A: Grease the slew ring ball groove every 50 hours using lithium-complex or moly-EP grease specified by Hitachi. Rotate the upper structure through 360 degrees while greasing to distribute grease to all balls.
Q: Can I replace only the worn section of the slew ring gear teeth?
A: No. The slew ring is an integral unit; individual tooth repair is not structurally feasible. When external gear teeth are chipped or worn beyond the service limit, replace the complete slew ring assembly.
Q: How to confirm 9169646 is the correct slew ring for my ZX200?
A: Match inner bore, outer diameter, number of bolt holes, bolt-circle diameter and external gear tooth count. Provide the ZX200 serial number to our team for cross-reference confirmation.
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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