Upper structure play or swing grinding on your DX75-5B or DX80? A worn DX75-5B slew ring loses ball groove geometry, increasing vertical play and generating the vibration that accelerates swing motor pinion wear. RITO supplies this compact heavy-duty slew ring to restore tight, quiet upper structure rotation on your Doosan mini excavator.
Item NO.:
DX75-5B Slewing RingOrder(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In StockDX75-5B Slewing Ring for Doosan DX75-5B, DX75-9C, DX75-9 and DX80 excavators. Compact-format slew ring with induction-hardened ball groove and precision internal gear teeth. The DX75 class concentrates upper structure load over a smaller-diameter ring than large excavators; uniform groove hardness and precise ball-to-groove clearance are essential for long service life.
| Part Number | DX75-5B Slewing Ring |
|---|---|
| Part Name | Slewing Ring / Swing Bearing / Turntable |
| Compatible Brand | Doosan |
| Applicable Models | DX75-5B, DX75-9C, DX75-9, DX80 Excavator |
| Application | Upper-to-lower structure pivot bearing and swing gear ring on Doosan DX75-series |
| Material | 42CrMo alloy steel, induction-hardened ball groove |
| Product Color | Black primer coat |
| Working Temperature | -30°C~+80°C |
| Key Function | Supports DX75-series 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 |
Ball groove surface hardened to HRC 55-60 to resist brinelling under the concentrated upper structure weight load acting on the smaller-diameter DX75 ring.
Internal gear teeth cut to correct module and tooth count for the DX75 swing pinion, ensuring quiet, backlash-controlled cab rotation.
Upper and lower lip seals retain grease while excluding soil contamination that accelerates groove and ball wear in compact excavator applications.
Single slew ring part covers DX75-5B, DX75-9C, DX75-9 and DX80 for simplified spare parts management across Doosan compact excavator variants.
FAQ
Q: How do I check whether the DX75-5B slew ring needs replacing?
A: Place a dial indicator on the counterweight and measure vertical play. Play above 1.5 mm indicates ball groove wear. Also rotate slowly and feel for periodic roughness indicating a worn groove section.
Q: How often should the DX75 slew ring be greased?
A: Apply lithium-complex or EP grease every 50 hours. Rotate the upper structure fully during greasing to reach all balls, including the section normally resting under the counterweight.
Q: Can I replace only the worn ball section of the DX75 slew ring?
A: No. The slew ring is an integral unit; sectional repair is not structurally feasible. Replace the complete ring when ball groove wear exceeds the service limit.
Q: How to confirm this slew ring fits my DX75-5B?
A: Match inner bore, outer diameter, bolt-circle diameters and internal gear tooth count. Provide the DX75-5B 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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