Compatible HB451586 Pump Membrane for Hitachi PXR RX Inkjet Printer CIJ parts
The compatible Hitachi HB451586 (or 451586) pump diaphragm is one of the most critical consumable components in Hitachi continuous inkjet printers (CIJ). It is widely used in the ink pump modules of mainstream Hitachi models such as PXR, RX, PX, PB, and UX. Because of its small size and light weight, this part can be shipped very quickly to the United States and Europe via international express couriers such as DHL, FedEx or UPS, and usually arrives within 3 to 5 business days.
Item No :
HB451586Order(MOQ) :
1Payment :
via paypal, Western Union, Money Gram, bank, credit guarantee etcProduct Origin :
ChinaColor :
NONEShipping Port :
XiamenLead Time :
5-7daysWeight :
1kg
Core Function: Serving as a hydraulic and airtight barrier within the ink pump, it provides stable pressure through continuous reciprocating motion, ensuring precise and continuous ink ejection from the nozzle. It also isolates the mechanical drive end from the corrosive ink liquid.
Superior Materials: Compatible components are made of high-performance chemical-resistant composite elastomer (high solvent-resistant rubber), capable of withstanding long-term chemical erosion from MEK-based, acetone-based, or alcohol-based inks and thinners without swelling or deformation.
Precise Fit: Manufactured strictly according to specifications, the center bore diameter and edge thickness perfectly match Hitachi's pump components.




Q1: Can this compatible diaphragm completely replace 451586?
A: Yes. High-quality compatible components are specially reinforced in terms of elasticity, toughness, fatigue resistance, and solvent resistance, making them a 100% direct replacement and an excellent alternative for reducing factory maintenance costs.
Q2: How often should pump diaphragms be replaced?
A: It is generally recommended to replace them preventively after 2,000 to 4,000 hours of operation, or during the annual major maintenance of the equipment. If you find that the machine has "unstable ink pressure," "pressure cannot rise," or there is a small amount of liquid leakage under the pump, it usually means that the diaphragm has aged, fatigued, or developed tiny cracks, and must be replaced immediately.
Q3: What are the shipping times and customs duties for shipments to Europe or the United States?
A: Delivery Time: After shipment, via DHL/FedEx/UPS air express, it takes approximately 3-5 business days to reach the US, Canada, and major European countries (Germany, France, UK, Italy, Netherlands, etc.). Customs Duties: Due to the low unit price and extremely light weight of this part (approximately 0.1 kg or less per piece), small-batch purchases are usually below the duty-free threshold of various countries (e.g., the US exempts goods under $800 from customs duties and declaration), ensuring smooth and fast customs clearance.
Q4: On which platforms can I find suppliers providing fast international express delivery?
Kingsfang.com HB451586: Suitable for B2B bulk purchases. Several well-known industrial OEMs, such as DOCOD, provide compatible diaphragms with a 1-year warranty and support direct shipping to Europe and the US. Hitachi 451586 diaphragm: Hitachi 451586 diaphragm on AliExpress: Suitable for small and medium-sized enterprises or retail purchases (usually sold in single-piece increments). Upgrade to FedEx or DHL express shipping is available at checkout. HITACHI Compatible 451586 PUMP MEMBRANE FOR PX...: 451586 printer parts on eBay: Several overseas-based industrial repair parts sellers offer in-stock items, and most have integrated cross-border e-commerce logistics, providing accurate delivery time estimates.
Q5: How to buy this lightweight part with the lowest possible shipping cost?
A: Due to the basic initial weight fee for international express shipping (usually calculated at 0.5kg), the shipping cost for a single diaphragm is often higher than the cost of the part itself. It is strongly recommended to stock up in batches of 5-10 pieces, or to pack them together with other maintenance consumables commonly used in Hitachi inkjet printers, such as HB451487 ink filters, main filters, solvent tanks, auxiliary water tanks, and nozzle O-rings, for consolidated shipping to best spread the shipping costs.
Q6: What are the advantages of Kingsfang parts?
A: They are developed in-house and fully compatible with the machine's functions. A professional team provides support ranging from troubleshooting to installation and usage. Shipping is extremely fast, with tracking information available within 1–3 days. They offer a comprehensive range of parts—including hard-to-find items—and are highly popular among sellers.
Q7: Can I test the parts or visit the factory?
A: If you are unsure which parts suit your printer, feel free to contact us for a free consultation. Contact us to arrange a free sample test.


Domino Ax-Series continuous inkjet (CIJ) printers, purchasing the pressure pump head separately from the electric motor is a common way to lower maintenance costs when only the mechanical pump components wear out
Read More
DB36610-DBA7021MD-T1 270 Double-Head Black Ink Pump (Short Rotor) is a specialized replacement part designed for Domino A-Series continuous inkjet (CIJ) printers, including the A400 model.
Read More
The ENM26966 is a 24V DC motor (part number A26966-PS) manufactured by Markem-Imaje. It is primarily used as a spare part for Markem-Imaje continuous inkjet (CIJ) printers, specifically for models such as the 9040, 9232, and S8.
Read More
CB003-1005-001 is a replacement pump head for solvent and black ink, designed specifically for Continuous Inkjet (CIJ) printers; it is primarily compatible with Citronix Ci1000, Ci700, and Ci580 series industrial inkjet printers.
Read More
This is the "PCB to Pump/Motor Cable" for the Domino A-Series Continuous Inkjet (CIJ) printer. This component is primarily responsible for transmitting control signals and power from the main circuit board (PCB) to the pressure pump motor, serving as a critical electronic link for the proper operation of the ink circulation system.
Read More
VB500084 is an 18W Dual-Head Positive Air Pump specifically engineered for Videjet (VJ) 1000 Series continuous inkjet (CIJ) printers. It plays a critical role in maintaining the positive air pressure required to keep dust, moisture, and airborne contaminants out of the printhead, ensuring clean, continuous coding.
Read More
The GB-SKN0871 (SKN0871) is a core spare part—specifically a mixer/agitator— Leibinger industrial small-character inkjet printers. Installed within the ink reservoir or mixing tank, it prevents the sedimentation and separation of industrial inks (particularly high-pigment white or yellow inks, or heavy-formulation inks), thereby ensuring absolute uniformity in ink viscosity and color intensity.
Read More
Part number CB003-1199-001 is a quick-connect fitting for Citronix industrial continuous inkjet (CIJ) printers.
Read MoreLeave A Message
Scan to Wechat :
Scan to WhatsApp :