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Standard 30A / 30AS Hydraulic Pump Drive Rubber Coupling for Hitachi EX100, EX120
The 30A / 30AS Flexible Rubber Coupling (Cross-Reference: CF-A-030 / 30A / 30AS) is a heavy-duty elastic drive coupling element engineered specifically for Hitachi EX-Series mid-sized crawler excavators.
Excavator Application Checklist
· Komatsu:PC60-7, PC70-7, PC78U, PC100-5, PC120-5, PC130 series.
· Hyundai:R110-7, R130, R140, R150-7, R150-9 medium excavator series.
· Doosan / Daewoo:DH80-7, DH130, DH150-7, DX140 series.
· SANY:SY115, SY135, SY155 medium-sized excavators.
· Hitachi:EX100, EX120, ZX110, ZX120, ZX130 series.
· Kobelco:SK100, SK120, SK130, SK140 series.
· KATO / Sumitomo:HD450, SH100, SH120, SH145 series.
· XCMG / SDLG:Most standard Chinese 13-ton to 15-ton class excavators (e.g., XE135, XE150, E6135F, E6150F).
Thank you for choosing SPARKLING MACHINERY.
The 30A / 30AS 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 30A / 30AS Flexible Rubber Coupling Photo:
The SPARKLING Standard 30A / 30AS Hydraulic Pump Drive Rubber Coupling is designed for Hitachi EX100 and EX120 excavators. Installed between the engine and hydraulic pump drive system, this coupling helps transmit engine power efficiently while reducing vibration and shock during operation.
Key Features
- Application-specific fitment: Suitable for Hitachi EX100 and EX120 excavators; compatible with Standard 30A / 30AS coupling specifications.
- Reliable power transmission: Supports stable transfer of rotational force from the engine to the hydraulic pump.
- Vibration and shock absorption: The rubber element helps cushion torsional impact, helping protect connected drivetrain and hydraulic components.
- Improved operating stability: Helps reduce excessive noise, vibration, and power transmission fluctuation under demanding working conditions.
- Practical replacement solution: Suitable for repairing worn, cracked, hardened, or damaged pump drive couplings.
- Quality-focused manufacturing: Produced under SPARKLING MACHINERY’s strict quality control process for consistent performance and dependable service life.
A worn hydraulic pump drive coupling may cause abnormal vibration, unusual noise, reduced power transmission, or accelerated wear on related components. Replacing it with a correctly specified coupling can help restore smooth operation and reduce the risk of secondary damage.
Before ordering, please confirm the excavator model, coupling type, dimensions, mounting configuration, and the original part information. Compatibility may vary according to machine version and production year. Professional installation and inspection of the engine, hydraulic pump, shaft alignment, and surrounding components are recommended.
Why Choose SPARKLING?
Founded in 2013, SPARKLING MACHINERY specializes in excavator parts, including hydraulic components, undercarriage parts, engine components, electrical parts, cabs, mini excavators, and accessories for Caterpillar, Komatsu, Hitachi, Volvo, and other leading brands. We provide reliable products, technical consultation, customized solutions, competitive pricing, and continuous service for customers worldwide.
FAQ
What are the primary symptoms that a 30A 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.
Get a free quote
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.
Contact us
Email: ranroswang@hksparkling.com
Wechat: +86 136 0901 0879
Skype: foreverlucia1
WhatsApp: +86 136 0901 0879
Address: No. 514-515, Hulin Road, Tianhe District, Guangzhou, China.
Sparkling Machinery Co.,Ltd
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