N11_Series_2000

N11_Series_2000
ROTARY GEAR PUMP
BRONZE
OBERDORFER PUMPS
A Subsidiary of Thomas Industries Inc.
MODELS
N11HDP
N11HDL
N11HDM
1 /1/4” NPT PORTS
STANDARD
Pump
Conversion
Seal
No.
Type
Material
Kit No.
N11HDP
Packing
Acrylic-Graphite
11021
N11HDL
Lip
Viton(R)*-Teflon(R)*
11023
N11HDM
Mechanical
Buna N-Ceramic
11025
SPECIAL
Pump
Conversion
Seal
No.
Type
Material
Kit No.
N11HDP-1
Packing
Viton(R)*
11022
N11HDLS3
Lip
Buna N
11024
N11HDMS7
Mechanical
Vitont*-Ceramic
11026
FEATURES
g All Bronze Castings and Stainless Steel Shafts
g Sealing Arrangement Interchangeable in Field
with Proper Kit
g Outboard Ball Bearing Support
g Self Lubricating Carbon Bearings
SERVICE WEAR FACTORS
SPEED - High speed accelerates wear. For longer service
life, keep speed as low as possible. Pump speeds above 900 R.P.M.
not recommended except for intermittent duty and pressures below
100 p.s.i.
PRESSURE - High pressure accelerates wear. For longer
service life keep pressure as low as possible.
LIQUID TEMPERATURE - High temperature accelerates
wear. Keep as close to room temperature as possible.
LIQUID CONTAMINATION - Impurities like fine abrasive
silt or sand accelerate wear. Keep liquid as clean as possible.
LIQUID LUBRICITY - Lubricants increase service life many
fold. Use lubricant additives whenever possible.
Note: Dotted lines(---) recommended for intermittent duty only
due to accelerated wear at higher speeds and pressures.
NOISE - Large gear pumps are inherently noisy due to metal to
metal gear contact. Make installations far removed from offices or other
relatively quiet people areas. Some noise reduction can be realized by
lowering pump speed and use of isolation mounts and lines, usually the
small amount of noise reduction achieved does not justify the effort and
expense.
DRIVE & ALIGNMENT- Direct drive is the recommended drive
arrangement. This pump is suitable for belt drive applications without
needing pillow block bearings to achieve acceptable pump life. Correct
alignment is absolutely essential for satisfactory pump life. Recheck alignment after piping has been connected to the pump.
SEAL CONVERSION KITS
Seal conversion kits, illustrated (on back) are designed for quick
removal and replacement. In each case, seal housings are fastened to
pump bodies by means of 2 bolts, item 13. IMPORTANT - before attempt ing to remove a seal housing containing seal components by sliding them
off the pump shaft, be sure to unlock the 2 set screws locking the ball
bearing inner race to the pump shaft. The ball bearing is identified as item
20. Also, before attempting to slide the seal housing from the pump shaft,
remove all burrs, scale, and projections that could be formed by fretting
corrosion.
* Viton(R)* is a registered trademark of DuPont Dow Elastomers. Viton(R) or equivalent FKM will be used.
Teflon(R)* is a registered trademark of DuPont. Teflon(R) or equivalent PTFE will be used.
www.oberdorfer-pumps.com
PHONE 800-448-1668; (315) 437-0361
FAX (315) 463-9561
ROTARY GEAR PUMP
BRONZE
OBERDORFER PUMPS
MODELS
N11HDP
N11HDL
N11HDM
A Subsidiary of Thomas Industries Inc.
EXPLODED VIEW AND PARTS LIST
1
2
3*
4*
5*
6*
7*
8*
9*
10
11*
12*
13
Cover
Screw
Snap
O-Ring
Bearing
Drive
Drive
Idle
Idle
Body
O-Ring
Packing
Screw
Gear
Shaft
Shaft
Gear
1 Reqd
8 Reqd
4 Reqd
1 Reqd
4 Reqd
1 Reqd
1 Reqd
1 Reqd
1 Reqd
4 Reqd
N11HDP 9333NN5N
5393
7651
9797-158
5108
9833
7366
7652
9834
9331NG7N
6515
7624
5916
N11HDL 9333NN5N
5393
7651
9797-158
5108
9833
7366
7652
9834
9331NG7N
6515
---
5916
N11HDM 9333NN5N
5393
7651
9797-158
5108
9833
7366
7652
9834
9331NG7N
6515
---
5916
Pump
No.
Ring
Ring
1 Reqd 1 Reqd
2 Reqd
14
15
16
17
18*
19
20
21
22*
23
24
25*
26
Nut
Gland
Screw
Seal
Lip
Snap Ring
Ball
Key
Lip
Seal
Ring
Seal
Dowel
Housing
Seal
Seal
Housing
Assy.
Pin
Repair
2 Reqd
1 Reqd
2 Reqd
1 Reqd
1 Reqd
1 Reqd
1 Reqd
1 Reqd
2 Reqd
Kit No.
N11HDP
5597
7451
6743
7449
6710
7372
7368
6518
---
---
---
---
8597
11003
N11HDL
---
---
---
---
---
7372
7368
6518
7262
7365
---
---
8597
11005
N11HDM
---
---
---
---
---
7372
7368
6518
---
7365
7651
32315
8597
11007
Pump
No.
Bearing
2 Reqd(P)
1 Reqd
3 Reqd 1 Reqd
1 Reqd (L&M)
*Repair Kits include parts 3, 4, 5, 6, 7, 8, 9, 11, 12, 18, 22 & 25
VARIATIONS
Pump
12*
22*
25*
No.
Packing
Lip
Seal
Repair
Ring
Seal
Assy.
Kit
4 Req'd 1 Req'd 1 Req'd
N11HDP-1
7450
---
---
N11HDLS3
---
6500
---
11004
11006
N11HDMS7
---
---
32372
11008
PACKING SEAL END
DIMENSIONS
LIP SEAL END
MECHANICAL SEAL END
10/00
www.oberdorfer-pumps.com
Specifications are subject to change without notice.
PHONE 800-448-1668; (315) 437-0361
FAX (315) 463-9561
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