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Brand New 40H Hydraulic Pump Drive Rubber Coupling Assembly for Hitachi EX100-3, EX120-3
The 40H Flexible Rubber Coupling (Cross-Reference: 40H / Centaflex 40H) is a heavy-duty elastomeric drive coupling engineered specifically for Hitachi EX-Series mid-sized crawler excavators.
Primary Excavator Application Checklist
· Hitachi: EX100-3, EX120-3, EX120-5.EX200-2, EX200-3, EX200-5 (one of the most common applications globally).EX220-2, ZX120.
· Sumitomo: SH240A5 and related mid-size configurations.
· Doosan / Daewoo & Kobelco: Select 14-ton to 20-ton legacy configurations utilizing standard Kawasaki hydraulic pumps.
Thank you for choosing SPARKLING MACHINERY.
The 40H rubber coupling assembly is manufactured using oil-resistant natural and synthetic elastomer blends integrated with heavy-duty steel bolt bushings and hub sleeves. 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 40H Flexible Rubber Coupling Photo:
The SPARKLING 40H Hydraulic Pump Drive Rubber Coupling Assembly is a brand-new replacement component designed for Hitachi EX100-3 and EX120-3 excavators. Installed between the engine and hydraulic pump drive system, the coupling helps transmit rotational power while absorbing vibration and compensating for minor alignment differences.
Key Features and Benefits
- Direct-fit replacement: Designed for convenient installation on compatible Hitachi excavator models.
- Reliable power transmission: Supports stable torque transfer from the engine to the hydraulic pump.
- Vibration and shock absorption: The rubber coupling element helps reduce operational vibration and impact, protecting connected components.
- Improved drivetrain protection: Helps minimize stress on the pump drive system and related components during demanding excavation work.
- Brand-new condition: Manufactured for dependable replacement performance and long service life.
- Cost-effective maintenance: Replacing a worn coupling can help restore smooth operation and reduce the risk of further drivetrain damage.
Compatibility may vary according to machine configuration, production year, and serial number. Please provide your excavator model and, if available, the original part number before ordering so our technical team can confirm fitment.
Why Choose SPARKLING?
Founded in 2013, SPARKLING MACHINERY specializes in high-quality excavator parts for Hitachi, Caterpillar, Komatsu, Volvo, and other leading brands. We focus on stability, precision, and consistent manufacturing quality. Our product range covers hydraulic components, undercarriage parts, engine components, electrical systems, cabs, mini excavators, and accessories.
With strict quality control, professional consultation, customized solutions, and global service support, SPARKLING helps customers maintain equipment reliability while controlling maintenance costs.
FAQ
What are the primary symptoms that a 40H 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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Whatsapp: +8613609010879