MURAIBIT SHIP SPARE PARTS TRADING CO. L.L.C
  • P.O. Box: 40328, Caterpillar Road, Sharjah - U.A.E.
  • +971 6 5322985
MURAIBIT SHIP SPARE PARTS TRADING CO. L.L.C

RDRN, RDRX, RDRB, RDRBJ Gear Pump

RDRN 4
RDRN 1
RDRN 2
RDRN 3
RDRN 4
RDRN 1

Description

Proven Performance & Operational economy are prime consideration while evaluting your pumping requirement. When it comes to handling viscous or semiviscous liquirds, ‘ROTODEL’ rotary gear pump is an obvious choice for the very reasons.

‘ROTODEL’ rotary gear, twin gear & screw-gear pumps are welknown, widely accepted pd pumps in all th industries for it’s efficient performance, operational reliability, compact design & noiseless operation. These pumps have outclassed convenational gear pump & has also broken myth about screw pump offering better overall performance at considerable reduced cost.Many imported gear & screw pumps are replaced with ‘ROTODEL’ pumps in power stations, steel plants, refineries, oil installation on navy vessels & cargo ships.

Popular range of ‘RDNXJ’ series `ROTODEL’ rotary screw-gear pumps are re-designed & re-engineered to offer further simplicity with added reliability meeting international standard like API, JIS, DIN & above all, the growing expectations of enlightened customers. New ‘RDRN’ series twin gear pump now offers enlarged capacity range with option of self or independently lubricated jacketed or non-jacketed construction with all sizes designed to run at synchronous speed of 4-pole primemover to further reduce the overall cost of the pump set..

It will be a wise decision to go for `ROTODEL’ rotary twin gear pump even If it amounts to scrapping exisiting Pump at your present installation.

Overview

From 1/2. to 6″ NB Size (Flanged to ASA 150 Class)Capacity, From 0.5 TO 200 WTI, Pres-up to 11 Kaden, Viscosity up to 1,00,000 – est, temperature – up to 110110ºC

  • Compact
  • Economical
  • Low Noise

Download PDF
Maintainance Manual RDRN with OS
Maintainance Manual RDRN with MS

Advantages

  • Herrigbone rotos design eliminates side thruts.
  • Modified tooth profile enhances the tooth life.
  • Floating gear-design ensures uniform load distribution.
  • Low-leakage path by design improve volumetric efficiency.
  • Extra thick shaft reduces bending effectively.
  • Sleeve on shaft make maintenance economical & easy.
Parts List with
Material of Construction
Sr. Item Qt Material
01 Pump Casing 1 CI/CS/SS
02 Front Cover 1 CI/CS/SS
03 Back Cover 1 CI/CS/SS
04 Gland Cover 1 CI/CS/SS
05 Rotor Shaft 1 EN 9/19/SS
06 Stator shaft 1 EN 9/19/SS
07 Impeller Gear 4 EN 24/SS
08 Needle Brg. 4 IKO/INA
09 Wear Plate 4 Bronze
10 Lifting Hook 1 Steel
11 R.V. Housing 1 Mal.Iron
12 R.V. Piston 1 EN 8/SS
13 R.V. Spring 1 Spri. Steel
14 R.V.AD Screw 1 EN 8/SS
15 Base Plate 1 M.S.
16 Coup. Guard 1 Alumn.
17 Coupling 1 Flexible
18 Coup. Key 1 EN 8/SS
19 Sealing Sys. 2 OS/MS/GP
20 Dowel Pin 4 Silv. St
21 Comp. Flange 2 MS/SS
22 H/T Hex Bolt 12 En 8/SS
Available Model Size & Capacity
Size
&
Model
1440 RPM Capacity Pump
GD2in KGM2
Elec.
Motor
H.P.
FR. Size
LPM US GPM M3/HR
1/2″
50
SML
8.30
16.60
25.00
02.20
04.40
06.60
0.50
1.00
1.50
0.0008
0.0009
0.0010
0.50
0.75
1.00
71M
80M
80M
1″
100
SML
33.30
50.00
60.00
08.80
13.20
15.84
2.00
3.00
3.60
0.0007
0.0008
0.0009
0.75
1.00
2.00
80M
80M
90L
1.1/2″
150
SML
83.30
100.00
125.00
22.00
26.40
33.30
5.00
6.00
7.50
0.0008
0.0008
0.0032
2.00
3
5.00
90L
100L
112M
2″
200
SML
150.00
166.00
200.00
39.00
44.00
52.80
9.00
10.00
12.00
0.0068
0.0074
0.008
3
5.00
7.50
100L
112M
132S
2.1/2″
250
SML
250.00
299.88
333.30
66.00
79.20
88.00
15.00
18.00
20..
0.01
0.013
0.015
5.00
7.50
10.00
112M
132S
132M
3″
300
SML
415.00
449.82
500.00
105.00
118.00
132.00
25.00
27.00
30.00
0.02
0.024
0.027
10.00
12.50
15.00
132M
160M
160M
4″
400
SML
599.76
666.66
833.30
158.40
176.00
220.00
36.00
40.00
50.00
0.056
0.062
0.072
15
20
25.00
160M
160L
180M
5″
500
SML
1000.00
1250.00
1499.00
264.00
330.00
396.00
60.00
75.00
90.00
0.098
0.112
0.177
20
30.00
40.00
160L
180L
200L
6″
600
SML
1660.00
1832.60
2083.00
440.00
484.00
550.00
100.00
110.00
125.00
0.27
0.31
0.335
30.00
50.00
60.00
180L
225S
225M
6″
600
SML
2499.00
2915.50
3332.00
660.00
770.00
880.00
150.00
175.00
200.00
0.4561
0.542
0.601
50
75.00
100.00
225S
250M
280S
Pump Motor Coding
Sign # Indicates Pump Size
5-short, 6-medium, 7-long
Sign @ Indicates Pump Type
0-RDRB, 1-RDRBJ, 2-RDRN, 3-RDRNJ, 4-RDRX, 5-RDRXJ
Sign * Indicates Motor Type
W-NON-Flame Proof
X-Flame proof motor

 

Size
&
Model
Dimensions Weight
Bp-cou
pump
Bp-cou
in Kg
Overall Mounting Shaft Flange
A1 J
A
J1 L1 K1 F1 B
C
S
S1
E
F
H
I
H1 T1
T
E1 C1 B1 I1 D
R1
K
L
P
Q
M
N
G
R
1/2″
50
SML
503
538
538
122

239

262
283
283
500
525
525
145
170
170
125
130
130
80

100

8

15

91

150

80

69

158
163
163
75

10

37
36
36
340
365
365
112
125
125
147
152
152
11.5

4

22

30

4

13

16

60

89

4

11.5
8.00
12.00
1″
100
SML
570
570
620
136

271

288
288
315
600
600
650
145
145
180
139
139
146
90

110

10

15

100

160

90

74

168
168
175
75

10

26
26
26
360
360
410
120
120
140
151
152
159
15

4

25

30

5

17

16

79

108

4

12.2
14.0
13.1
1.1/2″
150
SML
667
697
742
160

318

320
328
353
625
750
750
165
205
230
165
163
175
105

130

10

15

119

180

100

80

180
178
190
75

12

3
30
26
375
500
500
130
170
190
160
158
170
21

4

25

40

6

23.5

16

98

127

4

14.0
22.5
18.00
2″
200
SML
738
783
853
174

359

340
353
398
775
800
800
210
230
256
177
177
197
110

150

12

15

133

200

112

90

190
190
210
75

14

50
65
50
525
550
600
170
190
216
168
168
188
24

4

39

50

8

27

19

121

152

4

17.5
28.00
20.8
2.1/2″
250
SML
842
913
953
200

419

377
398
398
800
900
950
249
255
255
203
203
203
130

160

15

15

163

220

132

106

204
210
210
75

15

35
50
50
550
650
700
205
216
216
184
184
184
27

4

40

55

8

30

19

140

178

4

18.5
43.00
22.5
3″
300
SML
1015
1113
1113
240

481

451
528
528
1050
1100
1100
287
304
304
243
243
243
160

220

18

19

168

240

160

131

263
263
263
100

22

84
75
75
750
800
800
240
254
254
234
234
234
32

4

49

60

10

35

19

152

190

4

22.0
59.00
33.00
4″
400
SML
1186
1231
1296
274

554

548
548
568
1200
1250
1300
315
310
330
277
277
277
180

270

18

19

189

280

180

145

283
283
283
100

25

58
58
90
800
900
900
265
254
279
248
248
248
37

4

54

65

10

40

19

190

229

8

40.0
82.0
47.2
5″
500
SML
1292
1357
1447
293

615

603
313
673
1350
1400
1400
300
365
380
306
296
296
200

280

19

22

215

300

200

160

338
328
328
125

25

55
125
116
950
1000
1000
254
300
318
298
288
288
47

4

60

85

14

50.5

22

216

254

8

58.0
150.0
50.5
6″
600
SML
1432
1608
1608
343

690

643
728
728
1500
1650
1650
305
420
420
351
346
346
220

350

20

22

215

340

225

178

358
353
353
150

25

183
137
137
1100
1150
1150
245
356
356
311
306
306
52

4

80

95

16

56

22

241

279

8

50.5
175.0
76.0
6″
600
SML
1667
1882
1882
357

749

778
853
853
1650
1800
1850
430
480
530
360
406
390
380

240

22

22

230

360

250

200

403
433
433
150

28

136
126
126
1150
1350
1350
356
457
457
353
383
383
57

4

81

100

16

59

22

241

279

8

77.7
190.0
87.00

Pump Characteristics

Gear pump is a rotary positive displacement pump with positive pressure characteristics. The capacity of the pump varies directly with speed but remain constant against pressure, however due to running clearance between the casing & impeller some liquid always by-passes to suction causing sleep, which depends upon the differential pressure, viscosity of the liquid & ofcourse the workmanship. The pumps are capable of handling any vcosity, the sleep reduces with viscosity but the viscous power increases. The punp has a self-priming capability however some net positive suction head (NPSH) is always required to avoid cavitations depending upon the viscosity of the liquid to be pumped & the pump speed.

Internal power losses

The internal power losses in rotary pumps are of two types. The mechanical losses is the power necessary to overcome frictional drag of all the moving part within the pump While viscous losses is power requited to overcome fluid viscous drag & shearing action of the fluid, this can be computed from the graph on the opposite side.

H.P. calculation

The break horse power required to drive a rotary pump is sum of the theoretical HP & internal losses. The theoratical power is the actual work done in moving the fluid from inlet port to out let pressure condition & is product of Constant C=0.037, Capacity in cub. Mt./hr. & Pressure Kg/Sq. Cm or Constant=2.39, Capacity in us GPM & Pressure in PSI.

Pump Selection & uses

The bush bearing type of pump can be used for clean viscous liquid having sufficient lubricating value such as clean tube oil, Vegitable oil, Fish & Animal oil, Gear oil, Glycerine Hydraulic oil, Honey,ASMI & SAE lubricating oil for intermittant duty. However for continues duty pump with needle roller bearing in ‘RDRN’ series should be selected. For liquid having low viscosity,poor lubricating values or Containing dirts or impurities such as Crude oil, Dirty lube oil, HSD,Kerosene,LDO,Paints, Sugar solution, Turpentine, Varnish, WoodPulp. Pump with independently lubricated bearing should be selected. For liquid which tends to solidify at room temperature such as Ashphalt, Bituman, Fumace oil, Tar, Cellulose, Starch, LSHS, HPS, Molasses, Naptha, Phenol resin, RFO, Silicate, Soap solution,Viscous,Wax etc. Jacketing constructions hould be selected to facilitate the heating or the pump by steam or thermic fluid.

Inspection & testing

All Pumps are individialy tested for its performance as per JIS B-8312-1976. Third party inspection is also offered to following agencies with whom we are already registesed as an approved supplier of these pumps.

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