藤川伝導機 Product Lineup

The "needle cage for connecting rods" that we handle is a bearing used under extremely complex and harsh conditions, such as high temperatures, strong impact loads, high-speed motion, and severe lubrication conditions. The needle cage for the big end, "KT...EG," is designed to undergo acceleration and deceleration movements while simultaneously rotating and orbiting with the crank. Therefore, the cage is made of a special alloy steel, making it lightweight and highly rigid, with a structure that provides excellent lubrication through an outer diameter guiding method. In addition, we also offer the needle cage for the small end, "KTV...EG." 【Structure and Features】 ■ Excellent performance has been proven in numerous racing motorcycle engines. ■ Outstanding rigidity and wear resistance that withstand harsh conditions. ■ Lightweight with a large rated load. *For more details, please download the PDF or feel free to contact us.

The "cylindrical needle bearing" is a bearing with a small cross-sectional height and a large rated load. The outer ring has stable rigidity and can be easily used with housings made of lightweight alloys and other materials. There are metric and inch types, each available in versions with retainers and full complement, allowing for the selection of bearings suitable for various conditions such as heavy loads, high speeds, and low-speed rotations. 【Lineup】 ■ Needle bearings with retainers ■ Guide roller bearings *For more details, please download the PDF or feel free to contact us.

The "separable cage needle bearing" is a product that combines an inner ring, an outer ring, and an IKO needle cage, allowing for easy separation of the inner and outer rings. Bearings without an inner ring are available in single-row and double-row configurations with the same cross-sectional height, and can be selected based on load conditions. By heat treating and grinding the shaft, the desired radial clearance can be selected. Additionally, products with an inner ring are also available. 【Structure and Features】 ■ High precision due to simple structure ■ Radial clearance can be freely selected by choosing and combining parts ■ Excellent rotational performance due to the use of a needle cage *For more details, please download the PDF or feel free to contact us.

IKO's "Roller Bearings" are non-separable bearings with a large rated load, incorporating rollers in multiple rows. Roller bearings with retainers are suitable for locations where variable loads act at high rotational speeds. Additionally, the relatively large spacing between the rollers arranged in multiple rows provides a favorable structure against moments. We also offer full roller "Roller Bearings" suitable for locations where heavy loads act at low rotational speeds, as well as roller bearings for sheaves. 【Features】 ■ Available with retainers, full rollers, and for sheaves, allowing for selection of bearings suited to the operating conditions. ■ Particularly used in construction machinery and industrial machinery where heavy loads are applied. *For more details, please download the PDF or feel free to contact us.

This catalog introduces "thrust roller bearings," which combine thrust bearings with rollers, either needle-shaped or cylindrical, radially arranged in a cage, along with a disc-shaped raceway. We provide a table with diagrams detailing various types of cage designs such as AXK, K811, K812, along with applicable shaft diameters and the structure of designation numbers. It is also possible to use the shaft and housing directly as the raceway surface without a raceway disc, resulting in a lightweight and compact design structure. [Contents] ■ Thrust roller shafts ■ Thrust needle roller shafts ■ Thrust cylindrical roller bearings ■ Double-row thrust needle roller bearings *For more details, please download the PDF or feel free to contact us.

This catalog introduces the "Roller Follower York Type Track Roller," a bearing used in mechanisms where the outer wheel rolls along a track. It includes a summary of applicable shaft diameters, designation numbers, configurations, contents, and features for types such as RNAB2, NAB2, RNA22, NA22, NATR, NATV, and NACV. Please make use of this information for product selection. [Contents (partial)] ■ RNAB2 ■ NAB2 ■ RNA22 ■ NA22 ■ NATR ■ NATV *For more details, please download the PDF or feel free to contact us.

This catalog introduces the "Cam Follower with Stud" which has a stud instead of an inner ring. It includes models such as KRM□XH, KRMV□XH, KR/CR, KRT, KRV/CRV, KRVT, KRU, KRVU, NUKR, NUKRT, and NUKRU. It also explains the precision of bearings and installation details. Please make use of this for product selection. 【Contents (partial)】 ■KRM□XH ■KRMV□XH ■KR/CR ■KRT ■KRV/CRV *For more details, please download the PDF or feel free to contact us.

This catalog introduces "composite bearings" that integrate radial needle roller bearings, which bear radial loads, and thrust ball bearings or thrust roller bearings, which bear axial loads. It includes information on applicable shaft diameters and designation numbers for NKX, NKX□Z, NKXR, NKXR□Z, NKIA, AXN, ARN types, as well as their composition, content, handling characteristics, and features. Please make use of this information for product selection. [Contents] ■ Composite bearings ■ Needle roller bearings with thrust ball bearings ■ Needle roller bearings with thrust cylindrical roller bearings ■ Needle roller bearings with angular ball bearings ■ Needle roller bearings with double thrust needle roller bearings ■ Needle roller bearings with double thrust cylindrical roller bearings *For more details, please download the PDF or feel free to contact us.

This catalog introduces the "gap-adjustable needle roller bearing" which features needle rollers and retainers integrated into a solid (machined) outer ring with a special cross-section. It provides detailed explanations on bearing precision, radial internal clearance and fits, the precision of shafts and housings, and methods for adjusting radial internal clearance. Please make use of this information for product selection. 【Contents】 ■ Precision ■ Radial internal clearance and fits ■ Precision of shafts and housings ■ Methods for adjusting radial internal clearance ■ Inner ring-less RNA49□S type ■ Inner ring-equipped NA49□S type *For more details, please download the PDF or feel free to contact us.

This catalog introduces the "inner ring" used when employing shafts that cannot undergo surface hardening or grinding finishing. It includes main dimensions for the metric IR type and the inch MI type, along with key dimensions, designation numbers, mounting-related dimensions, and mass. Please make use of this information for product selection. [Contents] - Types and design - Composition of designation numbers - Precision of inner rings - Metric IR type - Inch MI type *For more details, please download the PDF or feel free to contact us.

This catalog introduces the "Solid Type Needle Roller Bearing with Separation," which features a solid (machined) outer ring without a flange or side plate, allowing for a structure where the outer ring and the needle roller with a cage can be separated. It includes applicable shaft diameters and designation numbers for RNAO type, RNAO□ZW type, NAO type, and NAO□ZW type. Additionally, it provides key dimensions for each type, as well as basic dynamic load ratings, basic static load ratings, fatigue limit loads, and permissible rotational speeds. [Contents] ■ RNAO type ■ RNAO□ZW type ■ NAO type ■ NAO□ZW type *For more details, please download the PDF or feel free to contact us.

This catalog introduces "solid needle roller bearings" suitable for applications requiring high speed, heavy load, and high rotational accuracy. It includes information on applicable shaft diameters and designation numbers such as RNA49, NA49, RNA59, NA59, RNA69□R, and NA69□R. Additionally, it explains the accuracy of the bearings, radial internal clearances and fits, dimensions of oil holes in the outer rings, and mounting relationships. [Contents (partial)] ■ RNA49 ■ NA49 ■ RNA59 ■ NA59 ■ RNA69□R ■ NA69□R *For more details, please download the PDF or feel free to contact us.

In this catalog, we introduce the "shell-type needle roller bearings," which are formed from thin steel plates through precision drawing processing, and after surface hardening of the raceway, are assembled with needle rollers that have retainers. We feature standard series such as HK type (HK□T2), heavy load series like HMK type (HMK□T2), and series for universal joints such as HCK type. Please make use of this for product selection. [Contents (partial)] ■ HK type (HK□T2) ■ HK□L type ■ HK□LL type ■ HK□ZWD type ■ HMK type (HMK□T2) ■ HMK□L type *For more details, please download the PDF or feel free to contact us.

This catalog introduces "needle roller bearings with retainers" specially designed to meet the environmental conditions for connecting rods of small and medium-sized reciprocating engines and compressors. It includes information on the PK type for the big end and the KBK type for the small end, detailing the retainer types, applicable shaft diameters, composition of designation numbers, designation numbers, content specifications, and dimensions. Please make use of this information for product selection. [Contents] ■ PK type ■ KBK type ■ Radial clearance ■ Specifications for connecting rods and pins ■ Regulations for connecting rods *For more details, please download the PDF or feel free to contact us.

This catalog introduces "needle rollers with retainers" that have a structure designed to prevent the separation of needle rollers by the retainer. It includes information on the types of retainers for models such as K type (K□S)(K□T2), KMJ□S type, KV□S type, and K□ZW type, as well as the applicable shaft diameters, designation numbers, composition of designation numbers, content of composition, and dimensions. Please make use of this information for product selection. [Contents] ■ K type (K□S)(K□T2) ■ KMJ□S type ■ KV□S type ■ K□ZW type *For more details, please download the PDF or feel free to contact us.

This document is a technical explanation about "needle roller bearings." It explains the types and characteristics of bearings, a bearing selection flowchart, rated loads and lifespan, calculations of bearing loads, bearing precision, internal clearances of bearings, fits, allowable rotational speeds, friction, and heat generation. By using this bearing, it becomes possible to miniaturize and lighten machinery, and it is also easy to replace sliding bearings with rolling bearings. 【Contents (partial)】 ■ Types and characteristics of bearings ■ Bearing selection flowchart ■ Rated loads and lifespan ■ Calculations of bearing loads ■ Bearing precision ■ Internal clearances of bearings *For more details, please download the PDF or feel free to contact us.

This catalog introduces OZAK's "Linear Bearings." We offer a variety of options including single, double, and triple lengths, as well as round, square, and oval flange-bearing units that correspond to these lengths. We also feature rust-resistant types, various grease-filled options, maintenance-free models, and the ultra-long-life Ultra Series that can withstand harsh operating conditions. We have presented this information clearly using diagrams, so please feel free to download and take a look. 【Featured Products (Partial)】 ■ Standard Linear Bearings ■ Rust-Resistant Linear Bearings ■ Linear Bearings with Oil Holes ■ European Size Linear Bearings ■ Double Linear Bearings *For more details, please download the PDF or feel free to contact us.

This document introduces the basic knowledge of linear motion systems. It includes detailed information on the impact of shaft deflection on lifespan, shaft deflection calculation formulas, deformation amounts due to load on linear bearings, and Hertzian stress, along with diagrams and charts. Additionally, as a technical introduction, it features a dimension table for retaining rings for the outer diameter of linear bearings and a hardness conversion table, making it a useful reference book. 【Contents (partial)】 ■ Differentiated products by linear motion professionals (RA, RB, RC) ■ Selection of reliability (rank classification) ■ Load distribution and its impact on lifespan under moment loading ■ Rated lifespan and basic rated load ■ Lifespan formula with high reliability and minimum lifespan based on the three-parameter Weibull distribution *For more details, please download the PDF or feel free to contact us.

The "LCRB" is a new type of bearing that adopts inner and outer rings made from press-formed materials. Compared to conventional products, it reduces mass by over 60%. This significant weight reduction contributes to energy savings in various devices. Due to its small cross-sectional height during installation, a compact design is possible. Being a flange-integrated type, it can be installed with a bolt-on method. 【Features】 ■ Ultra-lightweight ■ Compact ■ Easy installation *For more details, please download the PDF or feel free to contact us.

IKO Anti-Fretting Grease AF2 is a grease that excels in anti-fretting corrosion properties, using a urethane compound as a thickener and synthetic oil as the base oil. Linear guide devices and rolling bearings may experience wear accompanied by reddish-brown wear particles on the contact surfaces between the rolling elements and the raceway due to repeated minute reciprocating or oscillating motions. This phenomenon is referred to as fretting corrosion or false brinelling, which can lead to a decline in the performance and accuracy of the equipment. IKO Anti-Fretting Grease AF2 demonstrates stable performance over an extended period, even in applications with minute stroke movements where general greases are difficult to use, contributing to improved reliability of the equipment.

In the manufacturing processes of advanced industries such as semiconductors, liquid crystals, and computer peripherals, a high-purity environment is necessary because even the tiniest airborne particles can adversely affect products. In these industries, environmental technologies using clean rooms are indispensable, and low dust generation characteristics of linear guide devices used in various equipment are highly valued. Low dust generation grease for clean environments has the same amount of dust generation as conventional vacuum grease used for low dust generation, while also exhibiting superior lubrication performance and contamination prevention capabilities.

IKO's "Products for Secondary Battery Manufacturing Equipment Without Copper-Based Materials" In secondary battery manufacturing lines, the use of materials such as copper, zinc, and nickel is strictly limited to maintain battery quality, and special specifications such as low dust generation, prevention, and special packaging are required. Based on our extensive experience in these applications, IKO proposes optimal product specifications.

C-Lube turning type needle bearings are maintenance-free bearings filled with a thermosetting solid lubricant "C-Lube" in the bearing space. C-Lube is a lubricant that has been thermally processed and solidified from a large amount of lubricating oil and ultra-high molecular weight polyolefin resin microparticles. As the bearing rotates, the lubricant continuously seeps out onto the raceway surface in an appropriate amount, maintaining the lubrication performance of the bearing over a long period. C-Lube turning type needle bearings for food machinery are designed to ensure safety for the human body by using NSF H1 certified lubricants and resins that comply with FDA standards. They can be safely used in various food machinery.

The needle roller way is one of the roller-type finite linear motion guide devices that incorporates needle roller cages with two orthogonal rows of needle rollers, combined with precision-ground track bases in M and V shapes. Typically, two sets of track bases are arranged in parallel to form a linear guide mechanism. Depending on the customer's application, it is possible to enhance the precision and rigidity of the guide mechanism further, as well as to increase the load capacity, thereby extending the rated lifespan.

By adopting ultra-long units, we achieve downsizing of machine tools! We contribute to improving the machining accuracy of machine tools!

By applying special processing to the orbital plane, we suppress minute vibrations during operation, reducing pulsation by approximately 50% compared to standard ultra-long units. Due to the low pulsation, it is optimal for the axis guidance of ultra-precision machining machines that require high precision and high quality processing. Being an ultra-long unit, it significantly contributes to improving the load capacity and rigidity of machinery.

Cross roller bearings are compact structures that arrange rollers orthogonally between the inner and outer rings. The orthogonal arrangement of the rollers provides optimal performance as a bearing supporting the pivot axis of a copter.

The long-life specification turning-type needle bearings have enhanced hardness and toughness of the surface layer of the bearing through a newly developed special heat treatment, which suppresses the occurrence and progression of damage starting from the surface. This results in a significant extension of lifespan under severe load conditions and in lubrication environments where foreign substances may be mixed in. In lifespan comparison tests with standard heat-treated products, results have shown a remarkable increase in lifespan, exceeding five times that of standard heat-treated products.

Needle bearings are a type of bearing for rotational motion that incorporates thin rollers in the shape of needles, replacing traditional balls and similar components. They are characterized by being smaller and lighter compared to other rolling bearings, while still having a high load capacity. As a resource-saving type of bearing that helps make the entire machine more compact, they are widely used in automobiles, industrial machinery, office automation equipment, and have gained high reliability.

IKO needle rollers are made from bearing steel, finished to a hardness of 58 HRC or higher and a surface roughness of 0.1 μm Ra or less, providing high rigidity and precision. These needle rollers are widely used as rolling elements in bearings, as well as in bins and shafts. If you require stainless steel needle rollers, please contact IKO.

The new short-axis cam follower CFC…B adopts a new mounting structure using hexagon socket bolts and dedicated flange nuts (patent pending). While maintaining the performance as a cam follower, we have thoroughly pursued compactness and ease of installation. Compared to conventional cam followers, CFC…B significantly reduces the mounting space, thereby expanding design flexibility and greatly contributing to improved production efficiency across a wide range of fields.

The Parallel Drive Stage PD…S is a unique precision positioning XY stage developed by IKO, which achieves a reduced cross-section by incorporating a mechanism that converts the linear motion of pole screw actuators arranged in a two-axis parallel configuration into XY motion. Unlike conventional XY stages that stack single-axis actuators, this stage has no moving motors or cables around it, making it easier to access the stage from the outside and allowing for a highly flexible device design that does not limit the working area. The linear guide incorporates a maintenance-free series of C-loop linear ways, resulting in a compact and highly durable stage.