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Nippon Gear
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| | | Jack system | | |
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| | | Screw jacks and ball screw jacks are linear actuators which can easily realize accurate interlocking. Please consider the adoption of jacks as a jack system combining geared motors and couplings. Typical examples of system arrangement are shown below. Note: If the input shaft is rotated in arrow direction, the lifting screw will ascend. | | |
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| | | Type I | | |
| | | Type T | | |
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| | | Geared limit switch | | |
| | | Bevel gear box 1 | | |
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| | | Driving source | | |
| | | Geared limit switch | | |
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| | | Type U | | |
| | | Modified Type T | | |
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| | | Geared limit switch | | |
| | | Q | | |
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| | | Bevel gear box Geared limit switch | | |
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| | | Bevel gear box \ | | |
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| | | OH K> | | |
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| | | / Bevel gear box | | |
| | | Bevel gear box | | |
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| | | Driving power in the case of interlocked operation When two or more jacks are arranged for interlocked operation, the required power must be determined in consideration of the transmission efficiency, in addition to the power obtained as described above. | | |
| | | Type H | | |
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| | | | | | | | | | | | | Number of jacks used | 2 | 3 | 4 | 5-8 | | | | Transmission efficiency | 0.95 | 0.9 | 0.85 | 0.8 | | | | | | | | | | | | |
| | | Geared limit switch Bevel gear box | | |
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| | | Required power per jack X number of jacks used Required driving powerTransmission efficiency Note: The value obtained by the above furmula is the power necessary for the jacks and jack driving system. For actual application, the efficiency of the driving speed reducer, etc., must also be considered. Allowable torque of input shaft When the input shafts are connected in a series as in the case of Type I shown above, the allowable input shaft torque is as follows. (Unit: N-m) | | |
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| | 1U | | |
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| | | CH K> | | |
| | | MP Bevel gear box Y | | |
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| | | Bevel gear box | | |
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| | | | | | | | | | | | | | | | | | J0G(B) | J1G(B) | J2G(B) | J3G(B) | JGA | J4A(B) | J5A(B) | J6A(B) | JFA(B) | J7A(B) | | | | | 50 | 145 | 272 | 272 | 272 | 834 | 1106 | 1954 | 1954 | | | | | | | | | | | | | | | | | |
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