705-51-30340 Gear pump

Short Description:

705-51-30340 Hydraulic Gear Pump – Dual-Section Replacement

The 705-51-30340 gear pump is a robust hydraulic pump assembled for heavy machinery applications. It features a dual-section design (commonly specified as SAL80 + 100) allowing it to service multiple hydraulic circuits simultaneously (e.g. main flow and auxiliary flow).

The pump body is made of precision-cast aluminum alloy with machined internals. Straight-tooth external gears ensure smooth, pulse-free hydraulic delivery. Premium double oil seals (e.g. Japanese made) resist deformation and maintain pressure integrity even under high loads.

This unit is a direct-fit replacement for OEM 705-51-30340 / 7055130340 gear pumps, especially in crane and construction machinery systems. Each pump is thoroughly tested before shipment for leakage, flow consistency, and durability.

Product Details / Features

• Pump Type: External-engaged gear pump (straight tooth / external gear)

• Configuration: Dual-section (“SAL80 + 100”) variant in some listings (i.e. two gear sections, one with ~80 cc, another with ~100 cc)
  

• Material / Construction: Aluminum alloy housing, precision-machined gear elements, internal bearings and seals.
  

• Mounting & Ports:
    • Flange mounting (matching OEM pattern)
    • Inlet and outlet ports sized per OEM spec
    • Shaft interface matching OEM coupling

• Seals & Oil Control: Some suppliers claim use of Japanese double oil seals (e.g. NOK or similar) to resist deformation at high pressure (>16 MPa)
  

• Efficiency & Durability: Claimed volumetric efficiency up to 93%, working life target up to 2 years

FAQ — 705-51-30340 Gear Pump

Q1: What is the 705-51-30340 gear pump used for?
A: It’s a hydraulic gear pump used in heavy machinery systems (e.g. cranes, construction equipment). It converts mechanical energy into fluid flow in hydraulic circuits.

Q2: What are its main features?
A:

• Made from aluminum alloy, with external engaged straight-tooth gear design
  

• Claims volumetric efficiency up to ~93%
  

• Uses Japanese double oil seals to resist deformation under high pressure
  

Q3: What specifications or parameters should be checked before ordering?
A:

• Compatibility with machine model / serial number

• Hydraulic circuit layout (single- or dual-section)

• Port pattern, shaft type, and displacement (e.g. listings claim “SAL80 + 100”)
  

• Sealing, pressure rating, and material suitability

Q4: What is the warranty and delivery / lead time?
A:

• Typical warranty: 1 year
  

• For stock, delivery may be in 5–9days; for custom orders, about 15–20 days

Why Choose Poocca?

Poocca Hydraulic (Shenzhen) Co., Ltd is a leading hydraulic systems manufacturer combining R&D, production, and sales under one roof. With rigorous quality control, rich model coverage, and fast delivery, Poocca stands out in the industry.

• Extensive Inventory & Model Range — Poocca offers a wide portfolio of hydraulic pumps (gear, piston, vane) and parts, giving you one-stop sourcing.
  

• Short Lead Times & Stock Strength — Compared with peers, Poocca maintains ample stock and a streamlined logistics process to ensure prompt shipment.
  

• Strict Quality Assurance — Every production step is checked via multiple QC inspections, with final testing to guarantee product integrity.
  

• Customer-Centered Service — They respond quickly (within 12 hours), accept small orders (MOQ = 1 pcs), and support custom branding/packaging.