Every Oilgear piston pump carries an identification nameplate on the housing with a type code and a serial number. The type code is not decoration: each field in it changes which parts fit. Rotation decides the valve plate and the swashblock. Port arrangement decides the valve plate kit. Shaft code decides the shaft and bearing kit. Seal letter decides the seal kit. Get one field wrong and the parts will not fit.
This page shows how to read the code on each Oilgear family, and which fields matter when you are ordering parts. Once you have decoded yours, the Oilgear parts catalogs carry the factory exploded view and every service kit number for your frame.
The six fields that decide which parts you need
Field
Where it sits
What it changes
Seal material
Field 7 on PVWJ, PVM and PVG
Decides the seal kit outright. PVWJ defaults to V (Viton); PVM defaults to B (Nitrile); PVG defaults to V (Viton). Ordering the wrong material is the single most common Oilgear parts mistake.
Rotation
L or R
Left hand (CCW) and right hand (CW) pumps use different valve plates and different swashblock kits. The saddle bearings swap positions too.
Valve plate / port type
S, G, D or T
Rear, side, thru-shaft side, or top/bottom. Each has its own valve plate kit number, and on PVWJ not every combination exists for every size.
Shaft code
Y, B, S, C, D, K, L or R
Sets the shaft and bearing kit. The same letter means a different shaft on each frame size, so the frame has to be right before the letter means anything.
Design series
A1, A2, B1, B2, F1
Oilgear changed parts between design series. On PVM the series letters do not follow frame order at all, B1 is the A frame.
Serial number
stamped beside the type code
Some parts changed mid-production run. When a kit is listed as differing before or after a serial break, this is what settles it.
PVWJ / PFWJ type code Oilgear bulletin 47085A
Example type code
PVWJ-098-A1UV-LDFY-P-1NN-NN
Unit size
Displacement / frame
Design series
011
10.8 cc/rev
A
014
14.1 cc/rev
A
022
22.1 cc/rev
A
025
25.4 cc/rev
B
034
33.8 cc/rev
B
046
46.4 cc/rev
B
064
63.6 cc/rev
C
076
76.5 cc/rev
C
098
98.3 cc/rev
C
130
130.2 cc/rev
C
Seal code
Seal material, this is what picks the seal kit
V
Viton
P
EPR
Rotation code
Direction, viewed from the shaft end
L
Left hand, CCW
R
Right hand, CW
Port / valve plate code
Arrangement
S
Rear ported
G
Side ported
D
Thru-shaft with side ports
T
Top/bottom ported
Shaft code
011/014/022
025/034/046
064/076/098/130
Y
.75in keyed
.875in keyed
1.25in keyed
B
.875in keyed
1.00in keyed
S
SAE A spline
SAE B spline
SAE C spline
C
SAE B spline
SAE B-B spline
D
SAE A spline (industrial)
SAE B spline (industrial)
SAE C spline (industrial)
A1 is current for every displacement.
PVM type code Oilgear bulletin 47070-C
Example type code
PVM-011-B1UB-LDA-B-P-1NN/J-SN-AN-05
Unit size
Displacement / frame
Design series
011
A frame
B1
014
A frame
B1
022
A frame
B1
025
B frame
A1
034
B frame
A1
046
B frame
A1
065
B frame
A1
075
B frame
A1
064
C frame
A2
076
C frame
A2
098
C frame
A2
130
C frame
A2
Seal code
Seal material, this is what picks the seal kit
B
Nitrile (standard)
V
Viton
P
EPDM with PTFE shaft seal
Rotation code
Direction, viewed from the shaft end
L
Left hand, CCW
R
Right hand, CW
Port / valve plate code
Arrangement
S
Rear ported
G
Side ported
D
Thru-shaft with side ports
Shaft code
011/014/022
025/034/046
065/075
064/076/098/130
Y
.75in keyed
.875in keyed
1.00in keyed
1.25in keyed
B
.875in keyed
1.00in keyed
1.25in keyed
1.50in keyed
S
SAE A spline
SAE B spline
SAE B spline
SAE C spline
C
SAE B spline
SAE B-B spline
SAE B-B spline
SAE C-C spline
D
SAE B-B spline Cl 5
SAE C-C spline Cl 5
L
SAE B spline Cl 5
Read this one carefully: on PVM the design series does NOT run in frame order. B1 is the A frame, A1 is the B frame and A2 is the C frame.
PVG type code Oilgear bulletin 47019-J
Example type code
PVG-075-F1UV-LDF-Y-P-1NN-SN-AN
Unit size
Displacement / frame
Design series
048
48 ml/rev
065
65 ml/rev
075
75 ml/rev
100
100 ml/rev
130
130 ml/rev
150
150 ml/rev
Seal code
Seal material, this is what picks the seal kit
V
Viton (standard)
B
Buna nitrile
P
EPR
Rotation code
Direction, viewed from the shaft end
L
Left hand, CCW
R
Right hand, CW
Port / valve plate code
Arrangement
S
Rear ported
G
Side ported
D
Side ported, thru-shaft
Shaft code
048 / 065 / 075
Y
25-1, SAE B-B keyed
S
25-4, SAE B-B spline
K
22-4, SAE B spline
B
32-1, SAE C keyed
R
32-4, SAE C spline
F1 is the current design series. The later F1U design has its own parts catalog on this site.
PVWW, PVWH and PVW type code Oilgear bulletin 47013 / 47015
Example type code
PVWW-45-L-DF-S-CN-SN-TK
Unit size
Displacement / frame
Design series
06
legacy frame
10
legacy frame
15
legacy frame
20
legacy frame
34
legacy frame
45
legacy frame
60
legacy frame
Seal code
Seal material, this is what picks the seal kit
Set by the seal kit part number, not by a code letter, see the Kit No. 77 table on the PVWH catalog page
Rotation code
Direction, viewed from the shaft end
L
Left hand, CCW
R
Right hand, CW
Port / valve plate code
Arrangement
SA
Rear location, SAE straight thread
DA
Side location, SAE straight thread (sizes 06, 10)
DF
Side location, SAE flange
Shaft code
all sizes
Y
Keyed, SAE
S
Splined, SAE, mobile
D
Splined, SAE, industrial
B
Keyed, belt driven, sizes 06 thru 20
C
Splined, belt driven, sizes 06 thru 20
PVWH and PVW run 150-300 SSU petroleum oil. PVWW is the water-containing-fluid version for 27-30 SSU fluids such as water glycol, and needs a flooded inlet with no inlet filter.
PVK type code Oilgear bulletin 47025-E
Example type code
PVK-270-B1UV-LDFY-E-RNN-SN-GS
Unit size
Displacement / frame
Design series
140
140 frame
270
270 frame
370
370 frame
Seal code
Seal material, this is what picks the seal kit
V
Viton
Rotation code
Direction, viewed from the shaft end
L
Left hand, CCW
R
Right hand, CW
Port / valve plate code
Arrangement
D
Side ported
F
Flange connection
Shaft code
140 / 270 / 370
Y
Keyed
S
Splined
A1 and B1 design series. PFK is the fixed-displacement version of the same pump.
Still not sure which pump you have?
Photograph the nameplate, the whole plate, in focus.
Note the port arrangement (rear, side, top/bottom) and whether the pump has a thru-shaft with a cover plate or an adapter on the back.
Note the shaft keyed or splined, and its diameter or tooth count.
Tell us the fluid: petroleum oil, water glycol or phosphate ester.
Send that to info@restopower.com and we will identify it and quote the parts the same day.
Decoded your pump? Open the parts catalog for your frame, exploded views, every numbered part, and the Oilgear service kit numbers. Oilgear parts catalogs →
