standard marathon electric motors bearing sizes

Drawings represent standard TEFC general purpose motors *Dimensions are for reference only Leader in Energy Efficient Industrial Electric Motors and Drives Key and Keyseat Dimensions FrameDGFGD FrameDGFGD 63 11 8 5 44180 48 42 5 14 9 71 14 11 55200 55 49 16 10 80 19 15 5 66225 60 53 18 11 90 24 20 87250 70 67 5 20 12 100 28 24 87280 80 71 22 14 5 - Insulated bearings at both the driven and non-driven ends Another innovative approach now being applied to motors in IEC frame sizes 71 to 250 is in the form of bearings installed at both ends of the motor with insulated outer races or rolling elements This ensures that no current can flow to earth via the bearings For smaller motors

AC MOTORS

Improper storage of electric machines will result in seriously reduced reliability of that equipment For example an electric motor that does not experience regular usage while being exposed to normally humid atmospheric conditions is likely to cause the bearings to rust or rust particles from surrounding surfaces to contaminate the bearings

C3-Electric Motor Quality 6200 Series Light Duty - C3 EMQ C3-Electric Motor Quality 6300 Series Medium Duty - C3 EMQ Internal Clearance C3-EMQ 6700 Series -Thin High Speed 6800 Series X-Thin High Speed 6900 Series Thin Speed Duty 16000 Series Instrumental Duty Stainless Ball Bearing - Metric Sizes Stainless Steel Ball Bearing - SS6000

Table of Contents: 6000 Metric Series 6200 Metric Series 6300 Metric Series 6700 Metric Series 6800 Metric Series 6900 Metric Series 600 Metric Series 600 Metric Series (Flanged) MR Metric Series 16000 Metric Series 60/22 - 63/22 Metric Series 62000 Metric Series 5200 Metric Series 5300 Metric Series R Inch Series 1600 Inch Series 6000 Metric Series pdf Inner Dimension = Boundary dimensions (mm)

2 2 ELECTRIC MOTORS EFFICIENCY 28 2 2 1 Standard high 2efficiency (TS) high (TH) and premium (TP) motors 8 2 2 2 EC Regulation No 640/2009 29 2 3 POWER CONDITIONS 30 2 3 1 Standard construction motor voltage and frequency 30 2 3 2 Standard electrical construction motors with ST2 option 30 2 3 3 Motors with non-standard power voltages (SP1 - optional) 31 2 3 4 Inverter power

1 EPRI Report No NP-7502 Electric Motor Predictive and Preventive Maintenance Guide 1992 2 NRC Information Notice No 88-12 Over greasing of Electric Motor Bearings NER 880492 3 EPRI Power Plant Electrical Reference Series EL-5036 Volume 6 Motors 4 QIBR Bearing Maintenance Institute Manual 5

How to Read a Motor Nameplate

Bearings Your motor nameplate may include bearing information There may be two bearing specifications on a motor nameplate the drive shaft bearing and the opposite drive shaft bearing The difference between these two is the location in the motor The drive shaft bearing is located close to where the drive shaft extends out of the motor

2 Re-lubricating intervals for standard Catalog motors Re-greasing intervals and grease types when re-lubricating low-voltage motors Siemens AG I DT SD CST Version 1 2 Item-ID: 29316066 5 2 Re-lubricating intervals for standard Catalog motors This table is for information purposes only The exact re-lubricating intervals should

2 2 ELECTRIC MOTORS EFFICIENCY 28 2 2 1 Standard high 2efficiency (TS) high (TH) and premium (TP) motors 8 2 2 2 EC Regulation No 640/2009 29 2 3 POWER CONDITIONS 30 2 3 1 Standard construction motor voltage and frequency 30 2 3 2 Standard electrical construction motors with ST2 option 30 2 3 3 Motors with non-standard power voltages (SP1 - optional) 31 2 3 4 Inverter power

Mar 01 2008An electric motor in an Arizona open-pit copper mine where the ambient temperature is 130 F requires different grease than an identical motor in the Arctic Circle That's because the person responsible for greasing the bearings usually doesn't know the bearing sizes of every motor and some motors have a different bearing size on each

Since 1913 Marathon Electric has been dedicated to providing customers with quality products for targeted applications Located in Wausau Wisconsin the company is composed of two strategic product lines: motors and generators Marathon Electric Motors delivers efficient mechanical power solutions using AC electric motors up to 1250 HP

Deep groove ball bearings are the most common type of bearing for electrical motor use These bearings are good for moderate radial and axial loads They are used in vertical high thrust motors as a guide bearing for momentary upthrust Typical bearing

Apr 29 2013Relubrication of electric motors should be part of a planned maintenance program Bearing Size Periodic Grease Amount 3 5 10 6205 6206 10 6310 284 to 365 404 to 5811 30 50 80 80 20 6313/NU313 80 100 Standard 840 and 841 motors greased at the factory will use: Grease Name: Mobil Polyrex EM or equivalent

The tables given below show the bearing sizes lubricating interval and quantity of grease required for standard machines However in special applications different bearings/bearing arrangements can also be provided TABLE 3 Bearing size lubricating interval and grease capacity of horizontal foot mounted IM 1001 CACA IP 44 54 SPDP

Marathon Motors Replacement Parts Accessories

Product Title MARATHON MOTORS 184TTFW4760 Closed-Coupled Pump Moto Current Price $609 84 $ 609 84 Product Image Product Title MARATHON MOTORS 5KCP36NNB670U Instant Rev Motor 1/2 Current Price $277 70 $ 277 70 Product Image Product Title MARATHON MOTORS 184THTS8028 Vector Motor 3-Phase 3

Apr 29 2013Relubrication of electric motors should be part of a planned maintenance program Bearing Size Periodic Grease Amount 3 5 10 6205 6206 10 6310 284 to 365 404 to 5811 30 50 80 80 20 6313/NU313 80 100 Standard 840 and 841 motors greased at the factory will use: Grease Name: Mobil Polyrex EM or equivalent

conditions Motors have sleeve bearings at both ends Th e bearing on the D end is the guide bearing and means that it can tolerate a limited non-axial force Th e bearing on the N drive end is isolated Th e bearings are rigidly mounted to the end shield of the machine Th e bearing

Dec 09 2015The purpose of insulated bearing for Motors with VFD drives or the Alternators is to prevent the flow of circulating current in a closed circuit through bearing and ground (if bearing is not insulated) and consequently prevent the bearing from damage This circulating current is caused by induced voltage in the shaft because of AC flux

The motor standards can be grouped into two major categories: NEMA and IEC (and its derivatives) In North America the National Electric Manufacturers Association (NEMA) sets motor standards including what should go on the nameplate (NEMA Standard MG 1-10 40 Nameplate Marking for Medium Single-Phase and Polyphase Induction Motors)

When the motor is put into service purge the excess grease by running the motor without a load for at least 10-20 minutes with the drain plug removed If the motor was stored for several years the grease has probably hardened and the drain pipe is plugged with dried grease

2 2 ELECTRIC MOTORS EFFICIENCY 28 2 2 1 Standard high 2efficiency (TS) high (TH) and premium (TP) motors 8 2 2 2 EC Regulation No 640/2009 29 2 3 POWER CONDITIONS 30 2 3 1 Standard construction motor voltage and frequency 30 2 3 2 Standard electrical construction motors with ST2 option 30 2 3 3 Motors with non-standard power voltages (SP1 - optional) 31 2 3 4 Inverter power

Jun 19 2019About the author: Tom Bishop Tom Bishop P E is a senior technical support specialist with the Electrical Apparatus Service Association and has more than 30 years of hands-on and engineering experience at electrical machinery manufacturing and apparatus service firms Bishop has authored dozens of technical articles and papers and presented numerous seminars on electric motor

Product Title MARATHON MOTORS 184TTFW4760 Closed-Coupled Pump Moto Current Price $609 84 $ 609 84 Product Image Product Title MARATHON MOTORS 5KCP36NNB670U Instant Rev Motor 1/2 Current Price $277 70 $ 277 70 Product Image Product Title MARATHON MOTORS 184THTS8028 Vector Motor 3-Phase 3

Brushless motors use a standard numbering scheme to describe their physical size and kV rating For example: let's assume we have a 5055-3000kV Brushless Outrunner Motor We break the numbers out as follows: [50] [55] - [3000] [50] The first two numbers represent the diameter of the motor's housing in millimeters in this example 50mm [55] The second two numbers represent the length of the

2 Re-lubricating intervals for standard Catalog motors Re-greasing intervals and grease types when re-lubricating low-voltage motors Siemens AG I DT SD CST Version 1 2 Item-ID: 29316066 5 2 Re-lubricating intervals for standard Catalog motors This table is for information purposes only The exact re-lubricating intervals should