Swing arc rough or slew ring leaking on your SK135SR-2? A worn YY06-20708 93-tooth slew ring develops ball groove pitting that creates vibration during rotation and allows abrasive ingress through a deteriorated seal. RITO's slew ring restores smooth, sealed swing operation on your compact SK135SR-2.
Item NO.:
YY06-20708-OTOrder(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In StockYY06-20708 Slew Ring (93T) for SK135SR-2 excavator. This small-radius, 93-tooth internal gear slew ring is sized for the compact SK135SR-2 upper structure. The tight ball-to-groove fit required by the small ring radius demands particularly accurate groove geometry and hardness uniformity to carry the disproportionately high load-per-ball of a compact ring.
| Part Number | YY06-20708 |
|---|---|
| Part Name | Slewing Ring (93 Teeth / 93T) |
| Compatible Brand | Other (SK135SR-2) |
| Applicable Models | SK135SR-2 Excavator |
| Application | Compact upper-to-lower structure pivot and internal 93-tooth swing gear ring |
| Material | 42CrMo alloy steel, induction-hardened ball groove |
| Product Color | Black primer coat |
| Working Temperature | -30°C~+80°C |
| Key Function | Supports SK135SR-2 upper structure and provides 93-tooth internal gear for swing drive pinion engagement |
| Condition | 100% New Aftermarket OEM Quality |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
Precisely hobbed 93-tooth internal gear maintains the correct reduction ratio between swing motor pinion and upper structure rotation speed specific to SK135SR-2.
Groove radius and ball size selected for the SK135SR-2 ring diameter to achieve the maximum balls-per-circumference and lowest load-per-ball ratio possible in this compact format.
Narrow cross-section double-lip seal retains grease in the compact ball groove without adding ring height that would interfere with the SK135SR-2 upper structure mounting surface.
Bolt count, bolt-circle diameter and gear tooth count verified against SK135SR-2 OEM data for direct installation without modification.
FAQ
Q: What signs indicate the YY06-20708 slew ring on my SK135SR-2 needs replacing?
A: Periodic roughness at the same point during slow swing rotation (a flat spot), upper structure vertical play above 1.5 mm at the counterweight, and grease visible around the slew ring outer lip seal.
Q: Is the YY06-20708 slew ring suitable for the SK135SR-2 tail-swing restricted model?
A: The YY06-20708 is confirmed for SK135SR-2 specification. Verify your specific machine variant with the serial number to ensure no dimensional differences between SR-2 subvariants.
Q: What is the correct torque for the 267-6831 slew ring bolts?
A: Refer to the SK135SR-2 service manual for the correct inner and outer ring bolt torque. Incorrect torque causes ring distortion that pre-loads the ball groove unevenly, accelerating wear.
Q: How to confirm YY06-20708 fits my SK135SR-2?
A: Count the internal gear teeth (should be 93), match outer diameter, inner bore, bolt count and bolt-circle diameter. Provide the machine 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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