酒井製作所 List of Products and Services

The "TCFFD-65～100/TCFFS-65～100" is a spring unit that reduces the assembly workload on the shaft by separating the hub and flange parts. The "TCFFD-65～100" features a double plate spring section for high torque transmission, while the "TCFFS-65～100" incorporates a single plate spring section for high torque transmission. Additionally, it allows for a reduction in assembly work hours and can be combined with various hubs. 【TCFFD-65～100 Specifications (Excerpt)】 ■ Allowable Torque (N·m): 80–320 ■ Maximum Rotational Speed (min-1): 10000 ■ Allowable Eccentricity (mm): 0.20–0.31 ■ Allowable Angular Misalignment (°): 1.0 (one side) ■ Allowable Axial Displacement (mm): ±0.92–±1.41 *For more details, please refer to the PDF document or feel free to contact us.

• Other machine elements
• shaft

The "Sakai Continuously Variable Transmission T Series" is a catalog introducing the "T Series," which demonstrates instantaneous constant output characteristics and significantly reduces maintenance costs. This series is equipped with a standard automatic pressure device that prevents belt slippage even when an unexpected overload occurs, up to 150% of the rated load. The catalog includes a "List of Models," as well as specifications, performance, and dimensions for each product. [Contents] ■ List of Models ■ Standard Specifications / Special Specifications ■ Tips for Effective Use ■ TP Specifications, Performance, Dimensions ■ TM Specifications, Performance, Dimensions ■ TX/TXF Specifications, Performance, TX Dimensions, TXF Dimensions ■ TN Specifications, Performance, Dimensions ■ TNF Specifications, Performance, Dimensions *For more details, please refer to the PDF document or feel free to contact us.

• Transmission

The precision shaft coupling - standard type (unmachined shaft hole) "UCR series" is an unmachined product. It has a permissible eccentricity of 0.2mm, a permissible angular misalignment of 1°, and a maximum torque of 5 to 1280 N·m. While the allowable angular misalignment during use is 1°, it can structurally accommodate up to 3°. The maximum torque is the instantaneous torque that can be transmitted during startup and braking. For more details, please download the catalog.

• joint
• Coupling

The "LCS-M Series" precision shaft coupling - leaf spring type (for NC woodworking machines) is designed for NC and MC machine tools as well as NC woodworking machines. It features a combination of 1/10 taper shaft fastening and bolt clamping. It has a single leaf spring, a permissible angular deviation of 0.5°, a permissible axial displacement of ±0.2mm, and a maximum rotational speed of 8000r/min. For more details, please download the catalog.

• joint
• Coupling

The precision shaft coupling - leaf spring type (single) "LCS-T7 series" is a precision spring shaft coupling that absorbs misalignment using laminated leaf springs. It features a leaf spring single design, with a permissible angular misalignment of 0.5°, a permissible axial displacement of ±0.2mm, and a maximum rotational speed of 8000r/min. There are model numbers available that can be combined with hubs that have tapered shaft hole machining. For more details, please download the catalog.

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• Coupling

The precision shaft coupling - leaf spring type (rigidity-focused) "LCS-B series" is a single type that emphasizes rigidity. It adopts a 2-bolt system. The allowable angular displacement is 0.5°, the allowable axial displacement is ±0.2mm, and the maximum rotational speed is 8000r/min. It may also accommodate hole diameters other than the standard shaft hole diameter. For more details, please download the catalog.

• joint
• Coupling

The precision shaft coupling - leaf spring type (powerful shaft fastening) "LCD-T7 series" enables strong shaft fastening through a wedging effect. It has a permissible eccentricity of 0.1mm, a permissible angular deviation of 0.5°, a permissible axial displacement of ±0.4mm, and a maximum rotational speed of 6000r/min. It may also accommodate hole diameters other than the standard shaft hole diameter. For more details, please download the catalog.

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• Coupling

The precision shaft coupling - leaf spring type (no keyway processing required) "LCD-B series" allows for easy shaft fastening without the need for keyway processing. It adopts a 2-bolt system and features a double leaf spring. The permissible eccentricity is 0.1mm, permissible angular deviation is 0.5°, permissible axial displacement is ±0.4mm, and the maximum rotational speed is 6000r/min. It may also accommodate hole diameters other than the standard shaft hole diameter. For more details, please download the catalog.

• joint
• Coupling

The precision shaft coupling - compensation type (no key machining required) "UCN-T7 series" provides strong shaft fastening through a wedge effect, eliminating the need for key machining. It has a permissible eccentricity of 0.2mm, a permissible angular misalignment of 1°, and a maximum rotational speed of 6000r/min. While the allowable angular misalignment in use is 1°, structurally it can accommodate up to 3°. There are also model numbers available that can accommodate hole diameters other than the standard shaft hole diameter. For more details, please download the catalog.

• joint
• Coupling

The precision shaft coupling - standard type (easy shaft fastening) "UCN-B series" allows for easy shaft fastening without the need for keyway machining. It has a permissible eccentricity of 0.2mm, a permissible angular misalignment of 1°, and a maximum rotational speed of 6000r/min. While the usable angular misalignment is 1°, the structure can accommodate up to 3°. The fastening method can also be made taper clamp type on one side only. For more details, please download the catalog.

• joint
• Coupling

The precision shaft coupling - leaf spring type (2-bolt method) "LAS-C series" is a single type focused on rigidity. It adopts a 2-bolt method. The allowable angular misalignment is 0.5°, and the allowable axial displacement is ±0.1mm (LAS-12C: ±0.1mm), with a maximum rotational speed of 8000 r/min. It may also be able to accommodate hole diameters other than the standard shaft hole diameter. For more details, please download the catalog.

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• Coupling

The precision shaft coupling - leaf spring type (high-strength aluminum) "LAD-C series" is made of lightweight, low-inertia high-strength aluminum. It adopts a 2-bolt system. It features a double leaf spring. The allowable eccentricity is 0.1mm (LAD-12C: 0.05mm), allowable angular misalignment is 0.5°, and allowable axial displacement is ±0.2mm (LAD-12C: ±0.1mm), with a maximum rotational speed of 8000r/min. For more details, please download the catalog.

• joint
• Coupling

The "RA-C Series" precision shaft couplings - fixed type (exceptional fastening accuracy) adopt a unique structure that reliably captures the shaft axis for fastening, achieving outstanding fastening precision. It features a simple bolt clamp type, where the shaft is secured by tightening just four bolts. The high rigidity structure minimizes elastic deformation during shaft fastening. For more details, please download the catalog.

• joint
• Coupling

The precision shaft coupling - compensation type (high speed, high response, high torque) "UA-C series" is compatible with servo motors for high speed, high response, and high torque. The shaft connection is secure and there is no shaft runout. The allowable eccentricity is 0.2mm, the allowable angular misalignment is 1°, and the maximum rotational speed is 6000r/min. It may also be possible to accommodate hole diameters other than the standard shaft hole diameter. For more details, please download the catalog.

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• Coupling

The "TCD-B Series" precision spring shaft coupling - leaf spring type (low inertia, high torque) achieves low inertia and high torque transmission in a compact, space-saving body. It supports a maximum allowable torque of up to twice the standard, with high rigidity and low inertia for high precision and high responsiveness in automatic control. The space-saving design for axial mounting ensures high reliability and easy shaft fastening with a two-bolt clamp connection. We offer a large hub specification that allows for combinations of significantly different shaft hole diameters. For more details, please download the catalog.

• joint
• Coupling

The precision spring shaft coupling - leaf spring type (compact space-saving) "TCS-B series" achieves low inertia and high torque transmission in a compact space-saving body. It supports a maximum allowable torque of up to twice, with high rigidity and low inertia for high precision and high responsiveness in automatic control. The space-saving design for axial mounting ensures high reliability and easy shaft fastening with a two-bolt clamp connection. We offer a large bore hub specification that allows for combinations of significantly different shaft hole diameters. For more details, please download the catalog.

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• Coupling

The belt-type continuously variable transmission (ideal for forward and reverse operation), "TWD Series," features an electromagnetic clutch, brake, and worm gear reducer. It comes standard with a pulley that has a gear ratio of 1:5.5 in a compact body. You can choose between U-type and Z-type housings. Thanks to its unique oil-free mechanism and belt slip prevention mechanism, it does not cause troubles during operation. In particular, the instantaneous maximum torque that indicates the transmission power during forward and reverse operation or acceleration has a significant reserve in the low-speed range. As a result, instantaneous overloads do not cause belt slippage, enhancing the overall stability of the system and stabilizing the quality of the processed products. For more details, please download the catalog.

• Transmission

The belt-type continuously variable transmission (with excellent versatility) "TW Series" comes standard with a pulley that has a gear ratio of 1:5.5 in a compact body. You can choose between U-type and Z-type housings. Thanks to its unique oil-free mechanism and belt slip prevention mechanism, it does not cause troubles during operation. In particular, the instantaneous maximum torque that indicates the transmission power during forward and reverse rotation or acceleration has a large reserve in the low-speed range. As a result, there is no belt slip even under instantaneous overload, which enhances the overall stability of the system and stabilizes the quality of the processed products. For more details, please download the catalog.

• Transmission

The belt-type continuously variable transmission (hollow shaft type) "THF Series" comes standard with a pulley with a gear ratio of 1:5.5 in a compact body. You can choose between U-type and Z-type housings. Thanks to its unique oil-free mechanism and belt slip prevention mechanism, it does not cause troubles during operation. In particular, the instantaneous maximum torque that indicates the transmission power during forward and reverse rotation or acceleration has a large margin in the low-speed range. Therefore, even in cases of instantaneous overload, belt slip does not occur, enhancing the overall stability of the system and stabilizing the quality of the processed products. For more details, please download the catalog.

• Transmission

The belt-type continuously variable transmission (with free mounting angle) "TH Series" comes standard with a pulley that has a gear ratio of 1:5.5 in a compact body. You can choose between U-type and Z-type housings. Thanks to its unique oil-free mechanism and belt slip prevention mechanism, it does not cause problems during operation. In particular, the instantaneous maximum torque, which indicates the transmission power during forward and reverse rotation or acceleration, has a significant reserve in the low-speed range. As a result, there is no belt slip even under instantaneous overload, enhancing the overall stability of the system and stabilizing the quality of the processed products. For more details, please download the catalog.

• Transmission

The belt-type continuously variable transmission (completely oil-free structure) "TNF series" comes standard with a pulley that has a gear ratio of 1:5.5 in a compact body. You can choose between U-type and Z-type housings. Thanks to its unique oil-free mechanism and belt slip prevention mechanism, it does not cause troubles during operation. In particular, the instantaneous maximum torque that indicates the transmission power during forward and reverse rotation or acceleration has a large reserve in the low-speed range. Therefore, even in the case of instantaneous overload, belt slip does not occur, enhancing the overall stability of the system and stabilizing the quality of the processed products. For more details, please download the catalog.

• Transmission

The belt-type continuously variable transmission (completely oil-free structure) "TN Series" is equipped with a standard pulley with a gear ratio of 1:5.5 in a compact body. You can choose between U-type and Z-type housings. Thanks to its unique oil-free mechanism and belt slip prevention mechanism, it does not cause problems during operation. In particular, the instantaneous maximum torque that indicates the transmission power during forward and reverse rotation or acceleration has a large reserve in the low-speed range. Therefore, even with instantaneous overloads, belt slip does not occur, enhancing the overall stability of the system and stabilizing the quality of the processed products. For more details, please download the catalog.

• Transmission

The belt-type continuously variable transmission (high efficiency, low noise) "TX/TXF series" comes standard with a pulley that has a gear ratio of 1:5.5 in a compact body. You can choose between U-type and Z-type housings. Thanks to its unique oil-free mechanism and belt slip prevention mechanism, it does not cause troubles during operation. In particular, the instantaneous maximum torque, which indicates the transmission power during forward and reverse rotation or acceleration, has a large reserve in the low-speed range. As a result, there is no belt slip even under instantaneous overload, enhancing the overall stability of the system and stabilizing the quality of the processed products. For more details, please download the catalog.

• Transmission

The belt-type continuously variable transmission (low noise, low vibration) "TM Series" comes standard with a 1:5.5 gear ratio pulley in a compact body. You can choose between U-type and Z-type housings. Thanks to its unique oil-free mechanism and belt slip prevention mechanism, it does not cause troubles during operation. In particular, the instantaneous maximum torque that indicates the transmission power during forward and reverse rotation and acceleration has a large reserve in the low-speed range. Therefore, even in cases of instantaneous overload, belt slip does not occur, enhancing the overall stability of the system and stabilizing the quality of the processed products. For more details, please download the catalog.

• Transmission

The belt-type continuously variable transmission (easy to design) "TP series" comes standard with a pulley that has a gear ratio of 1:5.5 in a compact body. You can choose between U-type and Z-type housings. Thanks to its unique oil-free mechanism and belt slip prevention mechanism, it does not cause troubles during operation. In particular, the instantaneous maximum torque that indicates the transmission power during forward and reverse rotation or acceleration has a large margin in the low-speed range. As a result, there is no belt slip even under instantaneous overload, enhancing the overall stability of the system and stabilizing the quality of the processed products. For more details, please download the catalog.

• Transmission

This catalog is a comprehensive catalog of Sakai Seisakusho Co., Ltd., which develops, manufactures, and sells belt-type continuously variable transmissions and precision shaft couplings. We offer a wide range of products, including the heavy-duty specification coupling "Precision Correction Shaft Coupling," which features a deflection structure with high rigidity yet minimal supporting reaction force, as well as the flexible high-precision coupling "Precision Spring Shaft Coupling," which combines a non-backlash deflection structure with a hub that pursues rotational balance and rigidity. [Contents] ■ List of models and selection guide ■ Seven features of Sakai Precision Shaft Couplings ■ Precision Correction Shaft Coupling ■ Precision Spring Shaft Coupling ■ Precision Fixed Shaft Coupling ■ Price list ■ Allowable torque list *For more details, please refer to the PDF materials or feel free to contact us.

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