Search found 31 matches

by Robert
Thu Mar 09, 2017 9:46 am
Forum: Mechanical Projects
Topic: URGENT: Rotor Dynamic balancing
Replies: 0
Views: 1515

URGENT: Rotor Dynamic balancing

Dear All, We have a 90kW electrical motor. we overhaul the motor by replacing the bearing, dust seals, stator cleaning... this was done because of bearing damage. The stator and stator shaft seems to be OK without any crack, wear or damage. Could you please advise whether a dynamic balancing for the...
by Robert
Thu Mar 09, 2017 9:45 am
Forum: Mechanical Projects
Topic: Rack & Pinion versus Lead/ball Screw
Replies: 0
Views: 1409

Rack & Pinion versus Lead/ball Screw

Hi all, Firstly I apologize if this has been posted before, but I am looking for a comparison between R&P and LS on the basis of linearly produced force. I find it difficult to get the right answers since most posts refer to these system being used in CNC machines for positioning. I am working on a ...
by Robert
Thu Mar 09, 2017 9:43 am
Forum: Mechanical Projects
Topic: A2-70 Material for Washers
Replies: 0
Views: 1564

A2-70 Material for Washers

Hello to all, If anyone is familiar with this... Is it correct for a DIN125A washer to be made from A2-70 material? DIN 125, only refers to A2, and not -70 as a codification method. Although i have searched the web and found sources that confirm the use of A2-70 but i have also read that A2-70 shoul...
by Robert
Thu Mar 09, 2017 9:41 am
Forum: Mechanical Projects
Topic: The Journal Bearing Temperaure Raising During Rainy
Replies: 0
Views: 1356

The Journal Bearing Temperaure Raising During Rainy

Dear All I'm operating a compressor 3rd stages. During normal operation Journal bearing temperature of LP/IP Stage were rasing from 98 degree to 105 degree at alarm set point. These event happened while rainy then back to normal once stop. Could you pls help to advise me the root cause & preventive ...
by Robert
Thu Mar 09, 2017 9:39 am
Forum: Mechanical Projects
Topic: Siemens plc- lost back-up and unable to access the programs.
Replies: 0
Views: 1379

Siemens plc- lost back-up and unable to access the programs.

i need an opinion or possible solutions related with the PLC Siemens. presently i have a chilled water pumps with control panel integrated with PLC, MHI and VFD. the system control are designed and proven to be in-line with the project specifications. but i have an issue about accessing the PLC prog...
by Robert
Thu Mar 09, 2017 9:38 am
Forum: Mechanical Projects
Topic: Urethane, 90 Duro strain energy
Replies: 0
Views: 1270

Urethane, 90 Duro strain energy

Hey guys,

I need to know how much strain energy a rectangular piece of urethane has when compressed... For discussion purposes, say I have a 150mm x 200mm x 25thk block of 90 durometer urethane and I compress it 2.5m... How much force will this take? I've never calculated with Urethane before

Thanks
by Robert
Thu Mar 09, 2017 9:37 am
Forum: Mechanical Projects
Topic: gear design software
Replies: 0
Views: 1403

gear design software

hello is there any software which will calculate how to manufacture gears ? with correction factor, pitch, centres etc I have a gear train with 4 gears located. but 3 of the gears will hae different teeth counts and will be interchangeable. i.e first gear = 17,18,19 teeth. 2nd gear 58t, 59t 60t. eac...
by Robert
Thu Mar 09, 2017 9:36 am
Forum: Mechanical Projects
Topic: Grit removal channel design for industrial drainage (not waste water treatment)
Replies: 0
Views: 1359

Grit removal channel design for industrial drainage (not waste water treatment)

Hi all - I am investigating grit removal options for removing mostly sand from water draining from industrial washing machinery, but need advice specifically regarding grit removal channels used in smaller scale applications. Most of the guidelines readily available online pertain to the design of g...
by Robert
Thu Mar 09, 2017 9:34 am
Forum: Mechanical Projects
Topic: calculation of water flow rate in heat exchanger (water-air type)
Replies: 0
Views: 1378

calculation of water flow rate in heat exchanger (water-air type)

Frankly speaking, I am not an engineer. But I know little bit physics. To lift 250 watts of heat from my system, I want to use a water-air heat exchanger; i.e. water will take out the heat from metal block (which is hot) and will give out that heat to ambient (through fan). In this process, water wi...
by Robert
Thu Mar 09, 2017 9:33 am
Forum: Mechanical Projects
Topic: Pulleys : How to get to MA 14:1 with as few pulleys as possible .
Replies: 0
Views: 1309

Pulleys : How to get to MA 14:1 with as few pulleys as possible .

Hi all, Im a Noob , and I need the help of the community to help me solve some of the issues I've been having with this recreational project I've been putting together. As the title suggests, Im trying to construct a setup to attain a 14:1 Mechanical Advantage with as few pulleys as possible. Im try...