Home / Calculation of bearing pressure for heavy excavators

### Lubrication condition – the viscosity ratio, κ | SKF

Where κ < 1, EP/AW additives are recommended (Extreme pressure (EP) and anti-wear (AW) additives). The speed factor nd m is used to characterize the speed condition of the bearing. If the nd m of the bearing is lower than 10 000, the application is operating under low-speed conditions . This regimen requires high oil viscosity to ensure that

Get a quote### INTRODUCTION TO HEAVY HAUL TRAILERS

ground bearing pressure is 5.39 Te/sq meter and is based on the shadow area of the trailer. For example, note the 1.5 meter between axles lines that I marked on the drawing. It is approximately 0.75 m from the centerline of the end axles to the ends of the trailer platform. Therefore the length of the trailer is 15 x 1.5m + 1.5m for

Get a quote### Technical Specifications for 320 Hydraulic Excavators

Oct 25, 2017 · 320 Hydraulic Excavator Specifications Operating Weight and Ground Pressure 790 mm (31 in) Triple Grouser Shoes Weight Ground Pressure 4.2 mt (9,300 lb) Counterweight + Base Machine Reach Boom + R2.9 (9'6") Stick + 1.19 m3 (1.56 yd3) HD Bucket 22 500 kg 49,600 lb 35.5 kPa 5.2 psi 4.7 mt (10,400 lb) Counterweight + Base Machine

Get a quote### Outrigger Pads Calculator

For the Outrigger Pad Calculator to work effectively you'll need maximum load per outrigger and the maximum allowable ground pressure in the same unit of measurement. Don't worry, if you don't know the ground pressure - the calculator will ask you for the surface materials and you'll be able to select the most appropriate type.

Get a quote### Crane Planner 2.0 - Liebherr

The data displayed in Crane Planner 2.0 are determined by exactly the same calculation logic as the live data of the real mobile and crawler cranes. At the same time, important key figures such as ground bearing pressures, ground force, loads and centres of gravity are determined.

Get a quote### Ground Bearing Pressure: Practical Applications for Lifts

When I looked back and did the actual calculations, I was definitely over the allowable ground bearing pressure a little bit. Obviously, there's a safety factor built into that, but, if somebody is telling you that we're using the full length of the 4 by 80 ft mat, and all 80 square ft, then there needs to be some questions.

Get a quote### Ground Pressure - Digger Mats NI

So to begin with, we take the outrigger load, the amount of pounds of force being put down, plus the weight of the mat and divide that by the actual allowable ground bearing pressure, that's equation number 1. That gives you the actual area of the mat required.

Get a quote### GBP Calculator - Kobelco Construction Machinery U.S.A. Inc

Bearing Capacity of Soil - Types and Calculations - The

Get a quote### Excavator Maximum Operating Ground Bearing Pressure

Mar 21, 2018 · RE: Excavator Maximum Operating Ground Bearing Pressure JAE (Structural) 21 Mar 18 21:47 We've seen documents where they show various angles and elevations of the boom arm with resulting track pressures or wheel loads at each corner.

Get a quote### Crane - Load Calculation Template

Crane Calculation Template Example 1 Ground Pressure Known (Find Area of Pad Size) Outrigger Pont Loading (Based on 25tGround Bearing Pressure) Weight of crane + weight of load Ground Bearing Pressure Weight of Crane 72t Weight of Counterweight 60t 132t Weight of Load 11.4t Hook Block / Tackle 0.7t

Get a quote### Ground Bearing Pressure Estimator | Manitowoc

Ground Bearing Pressure Estimator. Manitowoc's Ground Bearing Pressure Estimator program is designed to assist lift planning personnel by providing an estimate of support requirement for a lattice boom crawler, truck, or Ringer crane. This program assumes that the lift has been fully engineered to verify attachment combinations, radius, angles

Get a quote### FAG bearing calculator - Nodes bearing

FAG bearing calculator. Schaeffler Group introduced the "Expanded calculation of the adjusted rating life" in 1997. This method was standardised for the first time in DIN ISO 281 Appendix 1 and has been a constituent part of the international standard ISO 281 since 2007.

Get a quote### Bearing Load Calculation

Bearing Load Calculation A-22 (2)Loads acting on cross shafts Gear loads acting on straight tooth bevel gears and spiral bevel gears on cross shafts are shown in Figs. 4.4 and 4.5. The calculation methods for these gear loads are shown in Table 4.3. Herein, to calculate gear loads for straight bevel gears, the helix angle β= 0.

Get a quote### FAG bearing calculator - Nodes bearing

FAG bearing calculator. Schaeffler Group introduced the "Expanded calculation of the adjusted rating life" in 1997. This method was standardised for the first time in DIN ISO 281 Appendix 1 and has been a constituent part of the international standard ISO 281 since 2007.

Get a quote### Ground Bearing Pressure: Practical Applications for Lifts

Calculation of bearing pressure for heavy excavators

Get a quote### The 45 Degree Rule of Thumb for Surcharges | Groundforce

The theories set out above give an indication for why temporary works engineers adopt the 45 degree rule of thumb. What is clear is that beyond 45°, the size of the load has reduced in magnitude and the effective centre of the load has moved deeper. The only discrepancy this leaves is in very shallow excavations with very close surcharges.

Get a quote### Calculation of bearing pressure for heavy excavators

Jan 16, 2018 · Thanks in advance. RE: Calculation of bearing pressure for heavy excavators. aeoliantexan (Geotechnical) 19 Jan 18 19:08. If the wheels have pneumatic tires, the usual approach is to assume the soil contact pressure is equal to the air pressure in the tire. Divide the load by the tire pressure to get the bearing area.

Get a quote### USE OF ANSYS FOR CALCULATING GROUND BEARING …

Traditionally, this calculation is carried out according to a procedure where the weights of the crane-payload system components are assumed to be static forces that generate a pressure on the ground through the support layer usually in the form of mats, which are used to maintain an overall pressure that is below the ground bearing capacity.

Get a quote### Bearing Capacity of Soil - Types and Calculations - The

6. Net allowable bearing pressure (q na) This is the pressure we can used for the design of foundations. This is equal to net safe bearing pressure if q np > q ns. In the reverse case it is equal to net safe settlement pressure. Calculation of Bearing Capacity For the calculation of bearing capacity of soil, there are so many theories.

Get a quote### Cable Pull Calculations - Installing & Pulling Heavy

Dec 22, 2020 · Side wall bearing pressure (SWBP), the radial force imposed at the bends, is by far the most common limiting factor. Excessive SWBP, usually visible in flattened armour or stretched jackets, can result in insulation damage which decreases cable life. Common misconceptions that have only minor effects on the resulting pull calculations

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- Calculation of bearing pressure for heavy excavators

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