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Crane and Hoist Equipment and Components by Type > Resource Center > Crane Glossary > CLASS B (LIGHT SERVICE) 
 

CLASS B (LIGHT SERVICE)

This service covers cranes which may be used in repair shops, light assembly operations, service buildings, light warehousing, where service requirements are light and the speed is low. Loads may vary from no load to occasional full rated loads with 2 to 5 lifts per hour, averaging 10 feet per lift.
 
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hoistclassification

Crane and Hoist Classifications

CMAA SERVICE CLASS C AND D
Within the crane industry, there has been considerable confusion as to the definitions of CMAA C and D services, as well as HMI ratings of H3 and H4. In the past, Class C has been regarded as packaged hoist equipment, while Class D has been regarded as open deck machinery. As packaged hoist manufacturers increased the duty ratings of their hoists from H3 to H4, packaged hoists then began to be used for Class D service. In some cases, this has resulted in premature failures of Class D packaged hoists when operating in a Class D rating.

Crane Manufacturers Association Specification No. 70
defines Class C and D service as:

Class C (Moderate ...


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CLASS C (MODERATE SERVICE)

This service covers cranes which may be used in machine shops or paper mill machine rooms, etc., where service requirements are moderate. In this type of service the crane will handle loads which average 50 percent of the capacity with 5 to 10 lifts per hour, averaging 15 feet, not over 50 percent of the lift at rated capacity.

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CLASS D (HEAVY SERVICE)

This service covers cranes which may be used in heavy machine shops, foundries, fabricating plants, steel warehouses, container yards, lumber mills, etc., and standard duty bucket and magnet operations where heavy duty production is required. In this type of service, loads approaching 50 percent of the rated capacity will be handled constantly during the working period. High speeds are desirable for this type of service with 10 to 20 lifts per hour averaging 15 feet, not over 65 percent of the lifts at rated capacity.

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CLASS E (SEVERE SERVICE)

This type of service requires a crane capable of handling loads approaching a rated capacity throughout its life. Applications may include magnet, bucket, magnet/bucket combination cranes for scrap yards, cement mills, lumber mills, fertilizer plants, container handling, etc., with 20 or more lifts per hour at or near the rated capacity.

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CLASS F (CONTINUOUS SEVERE SERVICE)

This type of service requires a crane capable of handling loads approaching rated capacity continuously under severe service conditions throughout its life. Applications may include custom designed specialty cranes essential to performing the critical work tasks affecting the total production facility. These cranes must provide the highest reliability with special attention to ease maintenance features.

American Crane Open Deck Hoisting Machinery

American Crane Low Profile Class D Open Deck Hoisting Machinery

 (15)
American Crane can provide pre-engineered industrial cranes and a full line of custom cranes to meet each customer's specific application. For support for your specific application please consult the CMAA Buyer Guide and/or contact an American Crane sales representative.

All American Crane & Equipment Corporation cranes are:
- Manufactured to rigid quality standards
- Factory tested prior to shipment
- Designed to meet the requirement of the Crane Manufacturers Association of America (CMAA) in duty class "A" - "F"
- All Hoists are built in strict accordance with the ...


American Crane Open Deck Hoisting Machinery

American Crane Standard Class D with Planetary Gearbox Open Deck Hoisting Machinery

 (38)
American Crane can provide pre-engineered industrial cranes and a full line of custom cranes to meet each customer's specific application. For support for your specific application please consult the CMAA Buyer Guide and/or contact an American Crane sales representative.

All American Crane & Equipment Corporation cranes are:
- Manufactured to rigid quality standards
- Factory tested prior to shipment
- Designed to meet the requirement of the Crane Manufacturers Association of America (CMAA) in duty class "A" - "F"
- All Hoists are built in strict accordance with the ...


American Crane Open Deck Hoisting Machinery

American Crane Standard Class D with Parallel Gearbox Open Deck Hoisting Machinery

 (39)
American Crane can provide pre-engineered industrial cranes and a full line of custom cranes to meet each customer's specific application. For support for your specific application please consult the CMAA Buyer Guide and/or contact an American Crane sales representative.

All American Crane & Equipment Corporation cranes are:
- Manufactured to rigid quality standards
- Factory tested prior to shipment
- Designed to meet the requirement of the Crane Manufacturers Association of America (CMAA) in duty class "A" - "F"
- All Hoists are built in strict accordance with the ...


American Crane Open Deck Hoisting Machinery

American Crane Standard Class E with Parallel Gearbox Open Deck Hoisting Machinery

 (48)
American Crane can provide pre-engineered industrial cranes and a full line of custom cranes to meet each customer's specific application. For support for your specific application please consult the CMAA Buyer Guide and/or contact an American Crane sales representative.

All American Crane & Equipment Corporation cranes are:
- Manufactured to rigid quality standards
- Factory tested prior to shipment
- Designed to meet the requirement of the Crane Manufacturers Association of America (CMAA) in duty class "A" - "F"
- All Hoists are built in strict accordance with the ...


ACECO--Top-Running-Single-Girder-shown-with-a-Duobox

American Crane Top Running Single Girder Cranes Class D with Wire Rope H4 Hoists

 (37)
Electric Top Running Single Girder Crane, complete with low headroom monorail trolley and electric wire rope hoist and controls.

American Crane can provide pre-engineered industrial cranes and a full line of custom cranes to meet each customer's specific application. For support for your specific application please consult the CMAA Buyer Guide and/or contact an American Crane sales representative.

DOWNLOADS
Specification
...


ACECO-Underhung-Underrunning-Single-Girder-Crane

American Crane Under Running Single Girder Cranes Class D with Wire Rope H4 Hoists

 (37)
Electric Under Running Single Girder Crane, complete with low headroom monorail trolley and electric wire rope hoist and controls.

American Crane can provide pre-engineered industrial cranes and a full line of custom cranes to meet each customer's specific application. For support for your specific application please consult the CMAA Buyer Guide and/or contact an American Crane sales representative.

DOWNLOADS
Specification
...


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American Crane Industrial Solutions

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American Crane Products

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American Crane Services

American Crane and Equipment Corporation (ACECO) can support all your field service needs. We provide installation, site services, outage services, and parts as well as upgrades and rebuilds. Our highly skilled field technicians and engineering support teams provide you with quality workmanship and extensive experience. With our first rate manufacturing facility, we are able to quickly produce and refurbish cranes, hoists, spare parts and components.

Contact the service department at 1-877-503-2972 or via email at sale@americancrane.com


Top-Running-Double-Girder-Crane-with-Wire-Rope-Hoist

Industrial Cranes

From complex custom equipment to standard equipment, components and parts, American Crane can meet all your material handling needs. American Crane is recognized as a leader in the design and manufacture of electric overhead traveling cranes and wire rope hoists, offering equipment for a wide variety of applications up to 1000 ton capacity as well as distributing smaller cranes from other manufacturers. We can manufacture your new crane or rebuild an existing crane. Let us find the solution that works for your situation.

American Crane can provide pre-engineered industrial cranes and a full line of custom cranes to meet each customer's specific application. For support for your specific application please consult the CMAA Buyer Guide and/or contact an American Crane sales representative.


American Crane Open Deck Hoisting Machinery

Industrial Hoists

From complex custom equipment to standard equipment, components and parts, American Crane can meet all your material handling needs. American Crane is recognized as a leader in the design and manufacture of electric overhead traveling cranes and wire rope hoists, offering equipment for a wide variety of applications up to 1000 ton capacity as well as distributing smaller cranes from other manufacturers. We can manufacture your new crane or rebuild an existing crane. Let us find the solution that works for your situation.

American Crane can provide pre-engineered industrial cranes and a full line of custom cranes to meet each customer's specific application. For support for your specific application please consult the CMAA Buyer Guide and/or contact an American Crane sales representative.


Coffing CBTP

Trolleys & Beam Clamps

Stainless_Steel_Nuclear_Grapple_Single

Below the Hook

American Crane is recognized as a leader in the design and manufacture of electric overhead traveling cranes and wire rope hoists, offering equipment for a wide variety of applications up to 1000 ton capacity as well as distributing smaller cranes from other manufacturers. We can manufacture your new crane or rebuild an existing crane. Let us find the solution that works for your situation.

American Crane can provide pre-engineered industrial cranes and a full line of custom cranes to meet each customer's specific application. For support for your specific application please consult the CMAA Buyer Guide and/or contact an American Crane sales representative.


Heavy Duty Forged Hoist Ring

Rigging and Rigging Accessories

Cant Hook

Forestry Tools

CM_Straight_Clevis

Farm Hardware & Fence Tools

CMHeavyDutyCableReel

Crane & Hoist Parts

CM Hoist Test Stand

CM Hoist Test Stand

The Value - Priced, Hydraulic Hand Operated
Test Stand — Tests Hoist Capacity to 12 Tons

The Value-Priced CM Test Stand is specially designed for the testing of hoisting equipment as required by the applicable sections of ASME Code B30.16. Unlike other test stands on the market that weigh thousands of pounds, the CM Value-Priced Test Stand weighs only 496 pounds. Portability for on-site testing becomes more practical. Fewer wearing parts provide superior performance.

• Hand operated hydraulic pump eliminates the need for electrical power.
• Capable of applying test loads up to 12 tons.
• Compact, self-contained design for portability and on-site testing.
...


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Material Handling Components

American Crane is recognized as a leader in the design and manufacture of electric overhead traveling cranes and wire rope hoists, offering equipment for a wide variety of applications up to 1000 ton capacity as well as distributing smaller cranes from other manufacturers. We can manufacture your new crane or rebuild an existing crane. Let us find the solution that works for your situation.

American Crane can provide pre-engineered industrial cranes and a full line of custom cranes to meet each customer's specific application. For support for your specific application please consult the CMAA Buyer Guide and/or contact an American Crane sales representative.