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TABLE OF CLEARANCES – Metallic Bearings 

(All dimensions in millimetres)

 

Clearance  
Grade  

EBSRAY 
MODEL 

Diametral 

Shaft 

to Bearing 

Diametral 

Rotor Pin 

to Bearing 

Diametral 

Outer Rotor 

to Body 

Axial 

Rotors 

to Cover 

Radial 

Inner Rotor 

to Crescent 

 

MD100 

0.051/0.089 0.063/0.101 0.10/0.16 

0.04/0.07 

0.03/0.08 
0.03/0.08

 

 

MD114 

0.051/0.089 0.063/0.101 0.11/0.17 

0.04/0.07 

0.03/0.08

 

A MD112 

0.051/0.089 0.063/0.101 0.13/0.20 

0.05/0.08 

0.03/0.08

 

 

MD200 

0.051/0.089 0.063/0.101 0.15/0.22 

0.05/0.08 

0.03/0.08

 

 

MD212 

0.051/0.089 0.076/0.114 0.16/0.25 

0.06/0.10 

0.03/0.08

 

 

MD100 

0.076/0.114 0.063/0.101 0.18/0.24 

0.08/0.10 

0.03/0.08

 

 

MD114 

0.076/0.114 0.063/0.101 0.19/0.25 

0.08/0.10 

0.03/0.08

 

B MD112 

0.076/0.114 0.063/0.101 0.21/0.28 

0.09/0.12 

0.03/0.08

 

 

MD200 

0.076/0.114 0.063/0.101 0.23/0.30 

0.09/0.12 

0.03/0.08

 

 

MD212 

0.076/0.114 0.076/0.114 0.25/0.35 

0.12/0.14 

0.03/0.08

 

 MD100 

0.076/0.114 0.063/0.101 0.27/0.34 

0.16/0.19 

0.03/0.08

 

 

MD114 

0.076/0.114 0.063/0.101 0.28/0.35 

0.16/0.19 

0.03/0.08

 

C MD112 

0.076/0.114 0.063/0.101 0.30/0.38 

0.17/0.22 

0.03/0.08

 

 

MD200 

0.076/0.114 0.063/0.101 0.33/0.42 

0.17/0.22 

 

MD212 

0.076/0.114 0.076/0.114 0.37/0.48 

0.20/0.28 

0.03/0.08 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

Figure 7 

 

TABLE OF CLEARANCES – Carbon Bearings

 (All dimensions in millimetres)

 

Clearance  
Grade  

EBSRAY 
MODEL 

Diametral 

Shaft 

to Bearing 

Diametral 

Rotor Pin 

to Bearing 

Diametral 

Outer Rotor 

to Body 

Axial 

Rotors 

to Cover 

Radial 

Inner Rotor 

to Crescent 

0.03/0.08

 

 

MD100 

0.025/0.063 0.038/0.076 0.10/0.16 

0.04/0.07 

0.03/0.08

 

 

MD114 

0.025/0.063 0.038/0.076 0.11/0.17 

0.04/0.07 

0.03/0.08

 

A MD112 

0.025/0.063 0.038/0.076 0.13/0.20 

0.05/0.08 

0.03/0.08

 

 

MD200 

0.025/0.063 0.038/0.076 0.15/0.22 

0.05/0.08 

0.03/0.08

 

 

MD212 

0.025/0.063 0.051/0.089 0.16/0.25 

0.06/0.10 

0.03/0.08

 

 

MD100 

0.051/0.089 0.038/0.076 0.18/0.24 

0.08/0.10 

0.03/0.08

 

 

MD114 

0.051/0.089 0.038/0.076 0.19/0.25 

0.08/0.10 

0.03/0.08

 

B MD112 

0.051/0.089 0.038/0.076 0.21/0.28 

0.09/0.12 

0.03/0.08

 

 

MD200 

0.051/0.089 0.038/0.076 0.23/0.30 

0.09/0.12 

0.03/0.08

 

 

MD212 

0.051/0.089 0.051/0.089 0.25/0.35 

0.12/0.14 

0.03/0.08

 

 MD100 

0.051/0.089 0.038/0.076 0.27/0.34 

0.16/0.19 

0.03/0.08

 

 

MD114 

0.051/0.089 0.038/0.076 0.28/0.35 

0.16/0.19 

0.03/0.08

 

C MD112 

0.051/0.089 0.038/0.076 0.30/0.38 

0.17/0.22 

0.03/0.08

 

 

MD200 

0.051/0.089 0.038/0.076 0.33/0.42 

0.17/0.22 

0.03/0.08

 

 

MD212 

0.051/0.089 0.051/0.089 0.37/0.48 

0.20/0.28 

 

6

Summary of Contents for MD Series

Page 1: ...NSTALLATION OPERATION MAINTENANCE INSTRUCTIONS MD SERIES MODELS MD100 MD212 Std Bracket INTERNAL GEAR PUMPS EBSRAY PUMPS PTY LIMITED ABN 52 000 O61 003 628 PITTWATER RD BROOKVALE NSW 2100 AUSTRALIA PH...

Page 2: ...arranty 1 5 HANDLING Do not drop pump pumpset Care should be taken in moving handling pumps pumpsets A sling should be placed under or around a pump pumpset in order to minimise stress on the internal...

Page 3: ...ich are not involved in the meshing cycle are sealed by the crescent C Body and Cover Refer Fig 5 3 2 PUMPING PRINCIPLE When rotation is started there is an increase in cell volume as the teeth come o...

Page 4: ...set on site in accordance with the predetermined pump and or system differential pressure required Refer separate instructions SECTION 4 MAINTENANCE CAUTION PRIOR TO ANY DISASSEMBLY OR SERVICE VERIFY...

Page 5: ...components and the working clearances of the pump 4 5 REASSEMBLY PRELIMINARY 1 Ensure all parts are clean before assembly Remove any burrs 2 Ensure free running fit of Outer Lockring in Race Carrier a...

Page 6: ...114 0 063 0 101 0 33 0 42 0 17 0 22 MD212 0 076 0 114 0 076 0 114 0 37 0 48 0 20 0 28 0 03 0 08 Figure 7 TABLE OF CLEARANCES Carbon Bearings All dimensions in millimetres Clearance Grade EBSRAY MODEL...

Page 7: ...6A Lubricate and Fit O Ring to Extraction Washer Slide Extraction Washer along Shaft until seated against Rotor Bearing For pumps fitted with EBSRAY mechanical seals 7A Slide Circlip along Shaft ensur...

Page 8: ...ith the Adjusting Screw pointing toward the inlet chamber of the pump 5 2 OPERATION The BPV is spring loaded and adjustable within a pressure range determined by the actual spring used EBSRAY can supp...

Page 9: ...t restrictions check NPSH available inadequately sized inlet piping may cause high friction losses vapour pressure of liquid may be too high Check with vacuum or compound gauge 6 Air leaks and or air...

Page 10: ...1 51 Bypass Valve Spring Cap 1 or 2 52 Pressure Pin 1 53 Bypass Valve Spring 1 54 Bypass Valve Lock Nut 1 55 Bypass Valve Adjusting Screw 1 56 Bypass Valve Adjusting Screw Cap 1 56A Gasket Adjusting...

Page 11: ...MD1112 MD200 MD212 Balanced Type MD100 MD114 MD112 MD200 MD212 Std Bracket Parts Designation MD100 MD114 Poppet Type 11...

Page 12: ...12 NOTES...

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