Each typical area of application is designated according to volume of handling and how frequently the rated load would be lifted. CMAA Crane Classification - A brief overview. Hoist Classification: Corresponding Crane Class: Corresponding Crane Class: FEM HMI ISO CMAA DIN 15018 & SIM. > Speed control (speed variation). CMAA Crane Duty Classifications CMAA Class Description Further Explanation Class A Standby or Infrequent Service This class normally includes installation and maintenance cranes. Hoist duty classifications are published standards for material handling, as defined by various institutions. The Tractel TS Electric hoist can be controlled by pendant, radio control or even wired into a separate control box for automatous operation. > Lifting height (up to 103,6 m).

Three Hoist Duty Classes (H2, H3, and H4) are indicatednext to their corresponding typical area of application. ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). Classification : ISO FEM 1 norm * Number of lifting cycles 360 90 120 150 180 240 300 STRUCTURES CLASSIFICATION According to : ISO or FEM section 1 CLASS OF LOAD SPECTRUM Structures regularly loaded close to the nominal load Structures lifting frequently enough the nominal load and usually loads between 1/3 and 2/3 of the nominal load Structures exceptionally lifting the nominal load … Different lifting speeds of 6 m/min (Hoist 1) and 8 m/min (Hoist 2) result in 2.084 operation hours, i.e. > Utilisation group (ISO classification up to M6). The Crane Manufacturers Association of America (CMAA) classifies bridge cranes according to average load intensities and number of cycles. This International Standard specifies a method for monitoring, during long-term operation, the actual duty of the crane, and a means of comparing this to the original design duty which was specified through classification. The information shown on the right of Figure 4 is listed assuming operation at K=0.65 (65% of W.L.L. 5.2 Design factor, Zp The minimum design factor shall be specified in accordance with Tables 1, 2 or 3, as applicable, taking into account the classification of mechanism and the rope duty or rope hoist and, in the case of stationary

percent of the lift at rated capacity. Classification of Hoisting Mechanism The classification of KPK cranes and their mechanisms according to the standards STN ISO 4301 and FEM (Federation Europeenne de la Manutention) specifies the group into which the crane and its mechanisms are classified. > High performance hoist motor.

Starts/hr.

T 3 (Hoist …

This equipment usually operates at slow speeds for precise handling with long idle periods between lifts. > Very high safety level of hoist brake.
The average daily operating time of the hoist can be calculated from the running time of the hoisting machinery (hours per day): t = (2 × H ×N × T) ÷ (V × 60) T:Average Daily Operating time.

Tractel offer a vast array of solutions readily available for use with the Tralift TS, for example they offer the units in a single or three phase power supply and higher duty ratings. Hoist Classification: Corresponding Crane Class: Typical Application: FEM HMI ISO CMAA DIN 15018 and sim. EXAMPLE; 1C m: H1: M2: CLASS A: H1/B2: Maintenace crane in machine house; Used only occasionally; 1B m: H2: M3: CLASS B: H1/B2: Light duty work shop crane; Single shift operation; Low average loads; Maximal load lifted occasionally ; 1A m: H3: M4: CLASS C: H2/B3: Light/Med duty …

1C m: H1: M2: Class A: H1/B2: Maintenance crane in machine house. Approaching the design life limit means an increased probability of hazards. Max On Time from Cold Start Max Number Starts; H1: Powerhouse and Utilities, infrequent handling, Hoists used primarily to install and service heavy equipment, loads frequently approach … > A greater hoist capacity (10 to 250 tons). Hoist Duty Class Typical Areas of Application Operational Time Ratings at 65% Mean Load Factor Uniformily Distribuited Work Periods Infrequent Work Periods; Max On Time Min/Hour Max No.

As to the types of cranes covered under CMAA Specification No. Work duty Classification > Hoist speed. The European Materials Handling Federation, known as ‘FEM’, are a standards body for the material handling industry and are publishers of the FEM Hoist Duty Classifications.

class T 4 (Hoist 1), respective 1.563h operation hours, i.e.

> Smart supervision of brake by the variator with slip or jamming detection feature. The work of preparing International Standards OVERHEAD TRAVELING CRANES CLASSIFICATION APPLICATION: Various standards exist to rate the “service class” of a crane and/or hoist. Hoist Classification: Corresponding Crane Class: FEM HMI ISO CMAA DIN 15018 & SIM.

Maximal load lifted occasionally. DIN 15018 and sim. H:Average lifting height (meter) N:Number of Work Cycles Per Hour (cycles/h) T:Daily working time (h) V:Lifting Speed (m/min) 3.

Paying attention to these hoist duty classifications can help you make sure you use your hoist safely and effectively. Both hoists are designed according to ISO 16625 for state of loading L4 (heavy duty), lifting height H=7.5m and C=50.000 load cycles. 1B m: H2: M3: Class B: H1/B2: Light duty work shop crane, single shift operation, low average loads. Used only occasionally.


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