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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...