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Seisa Gear Coupling Catalog
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Catalog excerpts

Seisa Gear Coupling Catalog - 1

Affiliated company of Sumitomo Heavy Industries,Ltd.

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Seisa Gear Coupling Catalog - 2

SEISA Couplings offer FULL LINE OF COUPLINGS As the world's leading manufacturer of Couplings and gears, gear drives, SEISA offers full line of Couplings as standardized types based on the abundant experiences for over 80 years in the Lubrication-free, non-backlash, maintenance-free Compact sized coupling with high torque transmitted capability developed from our original technology Grid-shaped spring to absorb shock load (Under the licences from FALK corporation, USA) SEISA Couplings have been applied to every industry around the world, enjoying high reputation on their reliability. Types...

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Seisa Gear Coupling Catalog - 3

Application examples Roller table Heavy-duty crane

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Seisa Gear Coupling Catalog - 4

Seisa Coupling Comparisons The features of DC, GC and SF Couplings are graphical- Select the Coupling optimum for your application.

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Seisa Gear Coupling Catalog - 6

1. Prime mover torque is fully transmitted despite the presence of misalignment (offset and Angular) of shafts to a certain extent. 2. The Coupling automatically adjusts and absorbs parallel offset or tilting of the coupled shafts even if it occurs during operation, avoiding excessive loading on shaft and bearing and thus 3. The flexible Coupling using crowned teeth features high durability and excellent wear Separable Coupling center and case facilitates assembly and disassembly. Besides, compact lightweight design saves the space for Unlike other flexible Couplings, GC Coupling produces...

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Seisa Gear Coupling Catalog - 7

GC-SSM type GC-SSMH type GC-SEM type GC-SEMH type GC-CCM type GC-CCMH type GC-CEM type GC-CEMH type GC-SMMtype Equipped with GC-CMVtype GC-SMVtype oil seal cover GC-CMVH type GC-SMVH type GC-SVtype GC-SAM type GC-EEM type GC-GLtype GC-CAM type GC coupling is constructed by the mesh between internal spur gear of the Coupling Case and crowned external spur gear of the Coupling Center. Working surface, top and bottom land of involute pfofile teeth are designed with crowns on all working portions of the teeth, so they can slide freely, and ensure uniform speed and smooth power transmission. 2....

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Seisa Gear Coupling Catalog - 8

Coupling name External gear Internal gear Parallel offset a gear mesh under offset Contact between internal gear and external gear teeth in meshing When offset misalignment exists, the coupling gear tooth tilts by tan ,4 = as shown in Figure 1. When the shafts are concentric, the gear tooth is in contact at the crowned tooth center (Ro) as shown in Figure 3(a). However, when the shafts have offset or angular misalignment after installation the gear tooth comes into contact at the point (R) away from the tooth center as shown in Figure 3(b). The larger the tilting angle is, the remoter the...

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Seisa Gear Coupling Catalog - 9

(b) Offset misalignment and axial gap GC-SSM type, GC-SMM type, GC-CCM type GC-SMV type, GC-SMVH type Note: SEM and CEM types cannot accommodate the offset (6) with a single unit. For these types, the axial gap (a) is a half of the value shown SEM and CEM types should be applied with the two units in combination, using floating shaft as shown in Figure 5. In this case, offset misalignment should be determined from the following equation. 1. Determination of service factor Si i=J> According to Table 4 and Table 5 2. Determination of offset and Angular factor S2 •in case that the shafts are...

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Seisa Gear Coupling Catalog - 10

Types of driving machine motors excluding those men- tioned below. as VVVF motor), equipment with belt drive or with frequent start and stop operations. Table 5 Service factor Si for special application Types of driven machine compressor, centrifugal pump, excluding those mentioned above and below, line shaft, reel pulverizer, crane ; and recipro- cating compressor, reciprocating Note: In the following cases, select in accordance with the method as described below, not using the table above. 1. If a system peak torque (Tmax) occurs less than 1000 times during the expected coupling life use...

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Seisa Gear Coupling Catalog - 11

In case of a coupling being used as a shaft coupling for a municipal sewage pump driven by a direct-coupled diesel engine. Alignment;assuming no offset & angular misalignments. Selection Steps: From Table 4, Service Factor Si is 1.7. From Table 6, Offset & Angular Misalignment Factor S2 From Selection Step 3, Reversing Factor S3 is 1.0. From Selection Step 4, the basic rating for selection H Since the starting load does not exceed 200% in this case, the above value can be taken as the basic rating Since the operating speed at 650rpm is not listed in the Transmitting Power Ratings on page...

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Seisa Gear Coupling Catalog - 12

When installing GC Coupling, carefully follow the Instructions below for optimum performance. Chuck Coupling Center (or Rigid), and to avoid damage to Coupling Center (or Rigid), use brass sheet between chuck jaws and Coupling Center (or Rigid). Check runout on front face and diameter. Tighten jaws and recheck runout of face and diameter. 2. Clean all parts of coupling. 3. Mount the Coupling Center on the shaft avoiding the damage to it. Place Coupling Cases, side coveres and O-rings on the shaft before mounting the Coupling Center. Seal keyways to prevent from leakage with sealing agent,...

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Seisa Gear Coupling Catalog - 13

Transmitted capacity GC-SSM type, GC-SEM type, GC-SMV type kgf-m for bottom lines Note: 1. Consult us when rotational speed is lower than lOOrpm. ^ Size number marked with # is in stock.

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Seisa Gear Coupling Catalog - 14

Transmitted capacity GC-CCM type, GC-CEM type, GC-CMV type ^ Size number marked with # is in stock. ^ For the application conditions in excess of the transmission power and the rotational speeds shown here, other series can comply with your requirements. Consult us by giving the required application conditions. (Examples) For generator drive: 30,000kW 1,800rpm

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Seisa Gear Coupling Catalog - 15

Transmitted capacity GC-SSMH type, GC-SEMH type, GC-SMVH type kgf-m for bottom lines Note: 1. Consult us when rotational speed is lower than lOOrpm. 2. The table applies to the reinforcement type (MH type) after heat treatment to M series.

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Seisa Gear Coupling Catalog - 16

Transmitted capacity GC-CCMH type, GC-CEMH type, GC-CMVH type Note: 1. The table applies to the reinforcement type (MH type) after heat treatment to M series. ^ Size number marked with # is in stock. ^ For the application conditions in excess of the transmission power and the rotational speeds shown here, other series can comply with your requirements. Consult us by giving the required application conditions. (Examples) For generator drive: 30,000kW 1,800rpm

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