SAKAI coupling

SAKAI Manufacturing Co., Ltd. is a Japanese manufacturer headquartered in Nagoya, Japan. The company specializes in the development, design, manufacture, and sales of power transmission equipment and precision mechanical components. SAKAI is particularly well known for its expertise in continuously variable transmission (CVT) technology and precision drive mechanisms. SAKAI’s products are engineered to deliver stable torque, smooth speed variation, and reliable performance with minimal maintenance. Their transmission technologies are widely used in industrial machinery, automation equipment, and mechanical systems where precise speed control and durability are required. With a strong focus on mechanical precision and innovative design, SAKAI continues to support customers by providing dependable power transmission solutions for a wide range of industrial applications. Main Product Categories & Technologies 1. Continuously Variable Transmission (CVT) Systems SAKAI manufactures belt-type continuously variable transmissions designed for smooth, stepless speed control. These CVT systems provide high torque capacity and stable output across varying operating conditions. Key Features Smooth speed change without step shifting High torque output, especially at low speeds Oil-free or low-maintenance design Stable operation during forward and reverse rotation Typical Applications Industrial machinery Automated production equipment Mechanical drive systems requiring flexible speed control 2. Precision Shaft Couplings & Power Transmission Components SAKAI also produces precision shaft couplings and related power transmission components used to connect rotating shafts while compensating for misalignment. Key Features High precision and durability Efficient torque transmission Designed for long service life Typical Applications Rotating machinery Automation and precision equipment Industrial drive modules Product Strengths Low maintenance operation — Reduced lubrication requirements and simple mechanical design High torque performance — Stable torque delivery even at low rotational speeds Smooth acceleration and direction control — Suitable for applications requiring frequent speed changes or reversal Precision manufacturing — Tight tolerances and consistent quality for industrial use Company Overview Company Name: SAKAI Manufacturing Co., Ltd. Headquarters: Nagoya City, Japan Core Business: Continuously variable transmissions (CVT) and precision power transmission components Key Technologies: CVT mechanisms, high-torque transmission, precision shaft couplings Main Markets: Industrial machinery, automation systems, precision mechanical equipment SAKAI Universal Couplings & Power Transmission Coupling Products — Categories & Model Examples SAKAI offers a range of precision couplings designed to connect rotating shafts while accommodating misalignment, vibration, and torque transmission. These products are often used in industrial machinery, automation systems, and precision drive modules. 1. Universal Couplings (Standard Type) Universal couplings transmit torque between two non-collinear shafts, allowing for angular misalignment and smooth rotational transmission. Model Examples UC-112 UC-140 UC-160 UC-200 UC-250 Typical Features Accommodates angular and parallel shaft misalignment Compact and robust mechanical structure Suitable for industrial drive applications 2. Universal Couplings (Heavy-Duty / High-Torque Type) Heavy-duty couplings designed for higher torque transmission and more demanding applications. Model Examples UC-H140 UC-H160 UC-H200 UC-H250 Typical Features Reinforced design for high torque Larger installation space allowance Suitable for heavy machinery drive systems 3. Elastic / Flexible Couplings Flexible couplings that absorb vibration and compensate for minor misalignment while transmitting torque. Model Examples EF-25 EF-30 EF-35 EF-40 EF-45 EF-50 Typical Features Elastic element to reduce vibration Smooth torque transmission Reduced peak loads on connected shafts 4. Sleeve / Jaw Couplings Standard sleeve-type couplings (jaw couplings) designed for general torque transmission with slight misalignment resistance. Model Examples SC-20 SC-25 SC-30 SC-35 SC-40 Typical Features Simple design and easy installation Moderate misalignment tolerance Suitable for general mechanical applications 5. Tapered Shaft Couplings Couplings designed to connect tapered shafts, commonly used in precision machinery where shaft diameter changes. Model Examples TC-40 TC-50 TC-60 Typical Features Tapered bore for secure fit Precision torque transfer High axial load capacity 6. Grid / Disc Type Couplings High-performance couplings designed for high torque, shock absorption, and dynamic load conditions. Model Examples GD-50 GD-65 GD-80 Typical Features Grid or disc element absorbs shock and vibration Suitable for heavy-load drives Higher misalignment handling capacity 7. Custom / Special Couplings SAKAI also provides custom-designed couplings and special configuration couplings for specific industrial needs: High temperature couplings Corrosion-resistant material couplings Precision balanced couplings for high RPM applications Hybrid couplings with built-in dampers Typical Features Tailored dimensions and materials Enhanced performance for special environments Designed to customer specifications General Characteristics of SAKAI Couplings Misalignment Compensation — Capable of handling angular, parallel, and axial misalignment depending on coupling type Vibration Reduction — Flexible elements absorb vibration and reduce transmitted shock Precise Torque Transmission — Designed for accurate power transfer in precision machinery Durability — Robust construction for long service life in industrial environments Summary of Model Overview Coupling Category Typical Model Examples Universal Couplings UC-112, UC-140, UC-160, UC-200, UC-250 Heavy-Duty Universal UC-H140, UC-H160, UC-H200, UC-H250 Elastic / Flexible EF-25, EF-30, EF-35, EF-40, EF-45, EF-50 Sleeve / Jaw SC-20, SC-25, SC-30, SC-35, SC-40 Tapered Shaft TC-40, TC-50, TC-60 Grid / Disc Type GD-50, GD-65, GD-80 Custom / Special Custom configurations available UA－40C－12×19

UA35C 10*10

UA35C10*10

UCN-80T7-22*24

VX-22-10-V

UC-80T-24*28，UCN-80T7-24*28

WC-80T-24× 28

UCN-65B-15*22

UA-35B-11*14  ：UA-35C-11*14

VC-80T-24×28

UA-25C-6*8

UA-25C-8*8

UA-30C-10*8

UA-25C-10*6

UA-20C-4.5*5

UA-30C-8*10

SVM-37-V1 SER NO.137663 P/N:5.6.7

SVM-37-V1 SER NO.137663 P/N.12

UA-25C-5*8

UA-30C 10X11

UA35C-10*10

UCR-100(DWG NO.48468717）

LAS-65B-17*22

LAS-55B-17*19

LAS-65B-17X19

LCD-100B-25*40

UC-80T-38*38，UCN-100T7-38*38

UC-80T7-24*28

VM-07-V1 ，  TM-15-V1

TP3 1;5.5 S/N:359177 BELT NO:S2528

UC-125T-38*38UCN-125T7-38*38

LCS-90B-30*25

UA35C-10*14

VM-07-V1 ，  TM-07-V1

UCN-155B-55*60

UCN-55B-17*14

UCN-55B-17*17

UA-30C-8*8

UA-40C-18*19

TWD-15-20-U-VL

UCN-80B-30X35(0-0.010)

UA-35C-10x14

UCN-55B-17×17

UCN-55B-17×14

UCN-55B-14×15

UCN-155B-55×60

UCN-65B-15×24

UCN-55B-12×14

UCN-55B-12×16

UCN-100B-38×40

UCN-100B-30×38

UA-35C-8×12

UA-30C-8*12

LAS-40C-12*14

LAS-40C-15*15

UCN-80B-30*35

LCD-90B-20X35

PK-15

UNC-125T7-32X42

UCNF-125T7-42

UCN-125T7-32X42

UCN-80T7-24X24

UCN-80T7-24X28

TWD-4-60-U-HL 220V 60HZ

TP3-225-19  NO:359173

UCN-55B-15X16

UCN-100B-20*25

LAD-30C-8*10

UA-25C-10*10

UA-35C-8*14

LAD20C-8-6  ：LAD-20C-6*8

LAD20C-8-6

LAS-58C-16*20

UCN-45B-10X10

UA-35B-11*14

UCN-65B-15×22

UA-25C-8×8

UA-35C-11×14

GC-SSM14D

UCR-65

UCR-100

TN-22-20-U-V

MODEL:S-22B RATIO 1：1

UCN-80B-20X22

S-15B-24

S-22B-28

UA25S12.7*15

UCN-125T7-40X42

UA-40C-24×22

UCNF-125T 7*42

UCN-80B-25×28

UCN-55B-12x14

UCN-125B-38×42

UCN-100T7-25*32

KUJYO/UA-30C- 2

KUJYO/UA-20C-6

UA-25C-8*6

UA-20C-8*8

UA-20C-4.5*8

UA30C-10*10

LAS-25C-8*8

UA-30C-6*14

UA-30C-14*6