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BELPARTS MACHINERY LIMITED

  • China,Guangzhou
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China Bob 320 321 323 Main Hydraulic Pump 6688448 PVD-0B-9P-5G-5041A OEM For Mini
China Bob 320 321 323 Main Hydraulic Pump 6688448 PVD-0B-9P-5G-5041A OEM For Mini

  1. China Bob 320 321 323 Main Hydraulic Pump 6688448 PVD-0B-9P-5G-5041A OEM For Mini
  2. China Bob 320 321 323 Main Hydraulic Pump 6688448 PVD-0B-9P-5G-5041A OEM For Mini
  3. China Bob 320 321 323 Main Hydraulic Pump 6688448 PVD-0B-9P-5G-5041A OEM For Mini
  4. China Bob 320 321 323 Main Hydraulic Pump 6688448 PVD-0B-9P-5G-5041A OEM For Mini
  5. China Bob 320 321 323 Main Hydraulic Pump 6688448 PVD-0B-9P-5G-5041A OEM For Mini

Bob 320 321 323 Main Hydraulic Pump 6688448 PVD-0B-9P-5G-5041A OEM For Mini

  1. MOQ: 1PCS
  2. Price: Negotiated price
  3. Get Latest Price
Part number 6688448
Delivery Time 1~5 days
Quality OEM
Payment Terms T/T,trade assurance,PayPal,L/C,D/P,D/A,Western Union,
Supply Ability 100 PCS / Months
Warranty 12 Months
Packaging Details Wooden Case Packing
Model Bob 320 321 323
Type PVD-0B-9P-5G-5041A
Appliion Excavator
Shipment Sea / Air / Express DHL FEDEX UPS
Certifiion CE
Part name Hydraulic pump
Place of Origin Japan
Brand Name Bob
Model Number 320 321 323

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  1. Product Details
  2. Company Details

Product Specification

Part number 6688448 Delivery Time 1~5 days
Quality OEM Payment Terms T/T,trade assurance,PayPal,L/C,D/P,D/A,Western Union,
Supply Ability 100 PCS / Months Warranty 12 Months
Packaging Details Wooden Case Packing Model Bob 320 321 323
Type PVD-0B-9P-5G-5041A Appliion Excavator
Shipment Sea / Air / Express DHL FEDEX UPS Certifiion CE
Part name Hydraulic pump Place of Origin Japan
Brand Name Bob Model Number 320 321 323
High Light Bob 320 hydraulic pump OEMmini excavator hydraulic pump 6688448PVD-0B-9P-5G-5041A excavator parts

Bob 320/321/323 Main Hydraulic Pump

6688448 / PVD-0B-9P-5G-5041A | OEM New | Mini Excavator Parts

1. Basic Info

  • Part Name: Main Hydraulic Piston Pump
  • OEM Numbers: 6688448, PVD-0B-9P-5G-5041A (Nachi)
  • Fits Models: Bob 320, 321, 323 (1.5–2 ton mini excavator)
  • Condition: OEM New / Original Quality
  • Warranty: 12 months
  • MOQ: 1 unit; in stock, ships 1–3 days
  • 2. Key Features
  • Genuine Nachi OEM pump, direct replacement for Bob 320/321/323



  • PVD-0B series compact piston pump, high efficiency & reliability
  • Integrated charge pump and relief valve; load-sensing compatible
  • High-strength cast iron housing and premium seals for long service life
  • Exact fit, no modifiion needed; matches original performance

3. Technical Specifiions

  • Model: PVD-0B-9P-5G-5041A
  • OEM No.: 6688448
  • Type: Axial piston pump, variable displacement
  • Rated Pressure: 21 MPa (210 bar)
  • Max Pressure: 25 MPa (250 bar)
  • Rated Flow: ~18 L/min
  • Rotation: Clockwise (CW)
  • Weight: ~21 kg
  • Mounting: Direct bolt-on, same as original

4. Compatibility

  • Bob: 320, 321, 323 (all serial numbers)
  • Cross Reference: 6688448, PVD-0B-9P-5G-5041A

5. Supplier Advantages (Belparts)

  • 10+ years in mini excavator hydraulic parts; Nachi & Bob OEM specialist
  • OEM new & genuine aftermarket options; full Bob 320/321/323 parts range
  • Exported to 150+ countries; CE-certified, strict QC testing
  • Guangzhou warehouse stock; fast air/sea/express shipping
  • Professional technical support for installation & troubleshooting

6. FAQ

Q1: Is this genuine Bob?

A: OEM New (Nachi original), matches Bob OEM specs and performance.

Q2: Does it come with a warranty?

A: Yes, 12-month warranty against manufacturing defects.

Q3: Ready to ship?

A: In stock; ships within 1–3 working days.
# Part No. Description Qty
1 6688448 PUMP PISTON; W/Ref. 2-52 1
2 6688089 KIT CYLINDER BARREL; W/Ref. 3-5, 22, 44-50 1
3 6688090 PISTON; W/Ref. 44-45 1
4 7012656 HOLDER, SHOE 1
5 7012654 BARREL, CYLINDER 1
6 7010811 O-RING 1
7 ---- PLUG; NLA 1
8 7012649 FRAME 1
9 ---- BODY; NLA 1
10 ---- CUP; NLA 1
11 ---- STOPPER; NLA 1
12 ---- STOPPER; NLA 1
13 ---- ROD; NLA 1
14 ---- PLATE, SWASH; NLA 1
15 ---- BALL; NLA 2
16 ---- RING, SNAP; NLA 1
17 ---- BEARING, BALL; NLA 1
18 ---- SHAFT; NLA 1
19 7012650 SEAL, OIL 1
20 ---- RING, SNAP; NLA 1
21 ---- BEARING, NEEDLE; NLA 1
22 7012657 HOLDER, BARREL 1
23 ---- PLUG; NLA 1
24 7010811 O-RING 1
25 ---- GUIDE, SPRING; NLA 1
26 ---- SPRING; NLA 1
27 ---- GUIDE, SPRING; NLA 1
28 ---- PIN; NLA 1
29 7012651 O-RING 1
30 ---- PIN; NLA 1
31 ---- BODY; NLA 1
32 ---- BOLT; NLA 1
33 7012652 SEAL, WASHER 1
34 ---- PLUG; NLA 5
35 ---- SCREW; NLA 1
36 ---- NUT; Pos.15 - NLA 1
37 6688537 O-RING 1
38 ---- COLLAR; NLA 1
39 ---- COUPLER; NLA 1
40 6693120 GEAR PUMP; NLA - Order 7012653 - Was 6693120 1
40 7012653 PUMP GEAR 1
41 ---- PIN; NLA 1
42 ---- SCREW; NLA 2
43 ---- WASHER; NLA 2
44 7012645 SHOE 10
45 7012648 PISTON 10
46 7012655 PLATE, VALVE 1
47 7012659 RING, SNAP 1
48 7012647 RETAINER 2
49 7012658 SPRING C 1
50 7012646 NEEDLE 3
51 6688538 O-RING; NLA - .41" OD - Was 6688538 1
52 6688539 O-RING 1
53 6688091 KIT SEAL; W/Ref. 6, 8, 19, 24, 29, 33, 37, 51-52 1
54 6688919 KIT SEAL; Use W/Ref. 40 1

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Exporter

  • Year Established:

    2013

  • Total Annual:

    $28000000-$41660000

  • Employee Number:

    1200~1300

  • Ecer Certification:

    Verified Supplier

Since 2013 Excavator Hydraulic Parts Manufacturer & Global Supplier Since 2013 Belparts Machinery Limited — Your Trusted Partner in Excavator Hydraulic Parts Who We Are Founded in September 2013 and headquartered in Guangzhou, China's premier engineering machinery hub, Belparts ha... Since 2013 Excavator Hydraulic Parts Manufacturer & Global Supplier Since 2013 Belparts Machinery Limited — Your Trusted Partner in Excavator Hydraulic Parts Who We Are Founded in September 2013 and headquartered in Guangzhou, China's premier engineering machinery hub, Belparts ha...

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Get in touch with us

  • Reach Us
  • BELPARTS MACHINERY LIMITED
  • 429-432,No.268 Zhongshan Avenue East,Huangpu District,Guangzhou
  • https://www.hydraulic-excavatorparts.com/

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