Standard 16A / 16AS Hydraulic Pump Drive Rubber Coupling for Komatsu PC35, PC40
The 16A / 16AS Flexible Rubber Coupling (Cross-Reference: CF-A-016 / 16A / 16AS) is a high-durability elastic drive coupling element engineered specifically for Komatsu mini and compact crawler excavators.
Main Applicable Excavator Models
· Komatsu: PC35, PC40, PC45, PC50, PC55, and the PC60 Series (e.g., PC60-5, PC60-6, PC60-7).
· Hitachi: EX35, EX40, EX50, EX55, and EX60 series.
· Hyundai: R55 and R60 series.
· Kubota: KX135, KX155, KX161, and other mini/compact excavator models.
· Other Global & Domestic Compact Brands: SANY, XCMG, Yanmar, or LiuGong 5-to-6 ton class mini excavators.
Thank you for choosing SPARKLING MACHINERY.
The 16A / 16AS rubber coupling is manufactured using oil-resistant natural and synthetic elastomer blends integrated with reinforced steel bolt bushings. Engineered to operate under continuous high-torque cycles and engine bay heat, it acts as a mechanical shock absorber between the flywheel and hydraulic pump. Replacing a hardened, sheared, or cracked coupling eliminates flywheel-to-pump vibration, prevents splined shaft wear, and restores smooth hydraulic power output.
The SPARKLING MACHINERY NEW 16A / 16AS Flexible Rubber Coupling Photo:



The SPARKLING 16A / 16AS hydraulic pump drive rubber coupling is a reliable replacement component designed for compatible Komatsu PC35 and PC40 excavators. Installed between the engine and hydraulic pump drive system, the coupling helps transmit power smoothly while reducing vibration, shock, and minor misalignment.
Product Highlights
- Part Type: Hydraulic pump drive rubber coupling
- Standard: 16A / 16AS
- Application: Komatsu PC35, PC40 excavators
- Function: Power transmission and vibration absorption
- Replacement Use: Suitable for repair, maintenance, and component replacement
Manufactured for excavator operating conditions, this coupling supports stable hydraulic pump performance and helps protect connected drivetrain components from excessive vibration and impact. Its flexible rubber construction provides effective cushioning during engine start-up, acceleration, and changing hydraulic loads.
Why Choose SPARKLING 16A Coupling?
- Reliable compatibility: Designed for use with specified Komatsu excavator applications.
- Stable operation: Helps maintain smooth power transfer between the engine and hydraulic pump.
- Reduced wear: Absorbs torsional vibration and helps minimize stress on related components.
- Cost-effective maintenance: A practical replacement solution for restoring excavator performance.
- Professional quality control: SPARKLING MACHINERY applies strict manufacturing and inspection processes to support consistent product quality.
Before ordering, please confirm the excavator model, coupling standard, dimensions, and existing part specifications to ensure correct fitment. If you need assistance with identification or customized excavator parts, our technical team can provide professional support.
SPARKLING MACHINERY, founded in 2013, specializes in high-quality excavator parts for Komatsu, Caterpillar, Hitachi, Volvo, and other leading brands. We focus on stability, precision, and long-term service, offering hydraulic components, undercarriage parts, engine components, electrical parts, cabs, mini excavators, and accessories.
FAQ
What are the primary symptoms that a 16A drive coupling needs replacement?
Common warning signs include excessive vibration or rattling noises coming from the engine flywheel housing, loss of hydraulic power, or visible cracking and rubber debris inside the bell housing.
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📦 Packing
1. Packaging methods: Carton box + Wooden case/Pallet + Anti-rust treatment
2. Export-standard packaging to ensure safety during transportation
3. Custom packaging available upon request
4. Dimensions and weight can be provided for freight calculation



🚚 Shipping
1. Available shipping methods: Sea freight, Air freight, Express delivery (DHL, UPS, FedEx, etc.)
2. LCL (Less than Container Load) and FCL (Full Container Load) options are supported
3. For Russian clients, we can introduce the forwarder agent to you
4. Delivery time: Ships within 1-3 working days after payment (for items in stock)
💳 Payment
1. Accepted methods: T/T, Bank Transfer, PayPal, Alipay, WeChat Pay, Western Union
2. Deposit + balance payment available for large or custom orders
3. Flexible payment options—feel free to contact us for details
📌 Frequently Asked Questions (FAQs)
Q: Which excavator models is this part compatible with?
A: This product is compatible with major brands such as CAT, KOMATSU, HITACHI, and more. Custom specifications are also available.
Q: How can I make sure I’m selecting the correct part?
A: You can send us a photo of the old part, part number, or your excavator model, and we will help you confirm the right match.
Q: Is there a warranty for this product?
A: Yes, we offer a 6-month quality guarantee under normal use.
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We are committed to producing the highest quality products at the most competitive prices. Therefore, we sincerely invite all interested companies to contact us for more information.



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