オスコ産業 Product Lineup

"Angular bearings" are products characterized by low torque for light to medium loads, widely used in the miniature field. By using a set of two, an appropriate preload condition is maintained, and they are mainly used as support bearing units for ball screws and rotating spindles. With a contact angle set at 45 degrees, they exhibit excellent characteristics due to their resistance to axial forces. 【Features】 ■ Support for high load capacities ■ High-speed rotation ■ Non-separable structure ■ Customization available ■ High precision *For more details, please download the PDF or feel free to contact us.

The "Thrust Bearing" we handle is a bearing designed to withstand pure thrust direction loads. Despite its extremely small size, it has a high-precision ball rotation groove processed, making it widely used in high-speed precision mechanisms that require durability. We also accept special specifications, so please feel free to consult us. 【Lineup】 ■CRT-, SST- ■CRT-fZ, SST-fZ ■SKT- *For more details, please download the PDF or feel free to contact us.

The "Outer Ring Grooved Guide Bearing" is designed with various grooves directly on the outer ring of the bearing. It is a bearing with wide applicability primarily for guiding threads, carriers, etc. Please select the model number according to the material and thickness of the thread or wire rope based on your intended use. 【Lineup】 ■SS-G SS-GZZ Model G ■SS-U SS-UZZ Model U ■SS-V SS-VZZ Model V *For more details, please download the PDF or feel free to contact us.

The "magnetic fluid seal bearing" blocks the intrusion of water and foreign substances from the outside by forming a strong film with magnetic fluid at the sealing part. It significantly reduces the rotational feeling of ball bearings, rust, and abnormal noises, making it possible to maintain initial performance over a long period. While achieving low torque, the special structure blocks the intrusion of water and foreign substances, allowing the product's inherent high rotational performance to be maintained for an extended period. 【Features】 ■ Low friction seal bearing ■ Expanded usage scenarios due to seawater and sea breeze compatibility ■ High dustproof and waterproof performance *For more details, please download the PDF or feel free to contact us.

Tsuchiho Grinding Industry is a manufacturer specializing in precision grinding and machining, focusing on large slewing bearings for construction and industrial machinery. We accommodate large products with an outer diameter exceeding 1,000 mm and have established a consistent production system from material procurement to processing, grinding, heat treatment, assembly, and inspection. With our long-established high-precision machining technology and strict quality control, we provide parts that require durability and reliability to both domestic and international markets. For more information about our products, please feel free to contact us. 【Products Offered】 ■ Rolling Bearings ■ Resin Bearings ■ Sintered Bearings ■ Slewing Bearings *For more details, please refer to the related links or feel free to contact us.

The "Gonioway" is a non-recirculating type of curved motion bearing that uses precision cross rollers, featuring low friction resistance. It is mainly used in optical instruments and measuring devices that require high precision, such as when it is necessary to change the inclination without altering the position of the rotation center or when an accurate tilt angle is needed. Additionally, due to precision grinding and the curved roller cage, the friction resistance is extremely low, with almost no difference between static and dynamic friction, allowing for precise tracking even at micro-feed levels, thus achieving high-precision curved motion. 【Structure and Features】 ■ Low friction resistance for micro-feed ■ Low noise ■ High rigidity and high load capacity ■ Flat mounting surface ■ Same rotation center position *For more details, please download the PDF or feel free to contact us.

The "NB Stroke Bush" is a product that can perform both linear and rotational motion, is compact, and can withstand large loads. The wear-resistant retainer is made of lightweight alloy and smoothly follows high-speed and high-acceleration movements. While the linear motion direction has a limited stroke, it operates with extremely low friction resistance and is smooth for combined rotational and linear movements, making it convenient for various devices. 【Structure and Features】 ■ High precision ■ Easy to install and replace ■ Lightweight and space-saving ■ Lubrication *For more details, please download the PDF or feel free to contact us.

The "NB Stroke Ball Spline SPLFS type" is a high-precision linear motion bearing that can simultaneously bear radial loads and torque with a limited stroke. This product consists of a cylindrical spline shaft with a raceway groove and an outer cylinder. The spline outer cylinder incorporates an outer cylinder body, a retainer, a side ring, and steel balls. The retainer is designed with ball pockets to ensure that the rolling elements, which are the steel balls, do not come into contact with each other, allowing for smooth linear motion. With a non-recirculating type retainer, the retainer also moves during linear motion, resulting in a limited stroke. It is recommended to use 80% of the maximum stroke listed in the catalog as the travel amount. 【Structure and Features】 ■ Extremely low dynamic friction resistance and low noise ■ Compact ■ Made of all stainless steel ■ Lubricated *For more details, please download the PDF or feel free to contact us.

The "NB Slide Way" is a non-recirculating linear motion bearing that uses precision rollers. It is mainly used in optical devices and measuring instruments that require high precision. The friction resistance is extremely low, and there is almost no difference between static and dynamic friction, allowing for accurate tracking even with minimal feed. It achieves a high-precision linear motion mechanism. 【Structure and Features】 ■ Suitable for minimal feed ■ Low-speed stability ■ High rigidity and high load capacity ■ Low noise ■ All stainless steel ■ Corrosion-resistant specifications *For more details, please download the PDF or feel free to contact us.

The "NB Slide Shaft" is a round shaft used in combination with slide bushes. Thanks to years of accumulated processing technology, we can accommodate general machining such as steps, threads, and taps, as well as long grinding and hole drilling. We provide high-quality products through advanced processing and hardening technologies. We also offer the "Freedom S" series, which standardizes general specifications. 【Features】 ■ Advanced processing technology ■ Excellent wear resistance ■ Surface roughness ■ Rich variety ■ Special specifications *For more details, please download the PDF or feel free to contact us.

The "NB Slide Rotary Bush SRE Series" is a product designed to provide complex motion functions of linear and rotational movement without constraints. Compared to traditional methods that use a combination of linear motion bearings and rotational bearings, it allows for significant compactness. It is available in 10 sizes ranging from Φ6 to Φ40mm. We offer three standardized series: standard type, type with square flange, and unit type, to accommodate various mounting needs. 【Structure and Features】 ■ Smooth operation ■ High load capacity ■ Smooth rotation ■ Complete compatibility *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "Grease Lubricated High-Speed Deep Groove Ball Bearings for EV/HEV" that we handle. Combining a resin retainer developed for high-speed rotation with grease, we provide optimal performance. The lightweight, high-strength resin retainer employs resin materials and shapes that enhance high-speed capability, heat resistance, and lubrication. The grease designed to improve high-speed lubrication performance enhances lubrication during high-speed rotation through the optimization of grease components. It utilizes grease that exhibits high lubrication and low heat generation over a wide temperature range. 【Features】 ■ Improved lubrication due to lightweight, high-strength resin retainer ■ Reduction of inertial forces and lightweight retainer ■ Reduction of centrifugal deformation (1/8 compared to standard resin retainers) ■ Reduction of rotational torque through optimization of materials and shapes ■ Ensured lubricant supply to the raceway surface through improved pocket shape (grease groove) ■ Heat resistance improved by 30°C, material strength increased by 1.6 times *For more details, please download the PDF or feel free to contact us.

"ULTAGE" is a bearing equipped with an IC tag that allows for the recording of machine repair information, inspection history, and bearing quality information as electronic data within the bearing itself, used in various industrial machinery. With a compact and lightweight reader/writer (PDA), there are no restrictions on where information can be recorded. By introducing dedicated software, reading and writing on a PC is also possible. The dedicated format comes with standard specifications prepared in advance, but changes to the specifications can be made upon request. Bearing history data can be saved on a PC, allowing for centralized management of bearing information for the entire machine. 【Features】 ■ Electronic information recording on the bearing itself is possible ■ Reading and writing with a dedicated reader/writer is possible ■ A dedicated format that allows for specification changes is available ■ It is possible to compare information at the time of bearing installation with information at the time of inspection ■ By writing bearing management information during inspections, it is possible to keep track of inspection dates, operating hours, and other recorded data history *For more details, please download the PDF or feel free to contact us.

The "EMLLX type" is a sealed self-aligning roller bearing developed to meet the demands for "long life," "improved reliability," and "enhanced handling" required in various industrial machinery. Since it has the same dimensions as open-type bearings that conform to ISO standards, it can be replaced with open-type bearings without changing the dimensions of surrounding components. The allowable misalignment angle is the same as that of open-type bearings at 0.5 degrees. The seal is fixed in place by a retaining ring, allowing for the removal and replacement of the seal. Both grease-filled and non-grease-filled types are available, accommodating lubrication specifications as required. 【Features】 ■ World-class load capacity (adoption of large diameter rollers) ■ Extended maintenance intervals ■ Downsizing and weight reduction ■ Adoption of removable seals ■ Compliance with ISO dimensions *For more details, please download the PDF or feel free to contact us.

The "WA type" is a sealed self-aligning roller bearing from the ULTAGE series, developed to meet the demands for "long life," "improved reliability," and "better handling" required in various industrial machinery. By adopting a "cage type" steel plate stamped retainer that maximizes the roller diameter and number, it achieves high load capacity and long life. The "contact type" dust seal, with a reduced seal volume, prevents the intrusion of foreign substances. By standardly incorporating oil holes and oil grooves on the outer diameter surface of the outer ring, it ensures reliable grease lubrication inside the bearing. There is no need for cleaning and grease filling during bearing assembly. 【Features】 ■ World-class high load capacity (adoption of large diameter rollers) ■ Extended maintenance intervals ■ Downsizing and weight reduction ■ Prevention of foreign substance intrusion ■ Contribution to extended lubrication intervals ■ Structure that facilitates easy entry of lubricants *For more details, please download the PDF or feel free to contact us.

The "Premium Shell Bearing" is an advanced shell-type needle roller bearing that pursues specifications for all components and meets the needs for long service life. It features a special heat treatment (special carburizing and nitriding treatment) with a proven track record in extending service life as standard, and it alleviates stress concentration (edge loading) at the ends of the rollers under heavy load conditions through crowning processing. The internal hardness is improved by carburizing and quenching chromium-molybdenum steel, allowing for use under static heavy load conditions with a safety factor of S0 ≥ 2, while maintaining a safety factor of S0 ≥ 3. There is no assembly directionality for pre-bent specifications. 【Features】 ■ Increased lifespan: 3 times ■ Increased static permissible load: 1.5 times ■ Reduced and stabilized pressure input ■ Special heat treatment (special carburizing and nitriding treatment) as standard ■ Alleviation of edge loading through the adoption of crowning ■ Adoption of V-shaped retainers to improve the inflow and outflow of lubricating oil *For more details, please download the PDF or feel free to contact us.

The "Mini Pillow" is a lightweight and compact bearing unit that combines an oil-impregnated bearing with a steel housing. There are three types: Mini Pillow Unit, Mini Flange Unit, and Mini Side Flange Unit, which are widely used in general industries such as office equipment, agricultural and fishery machinery, and transportation and construction machinery. It has a porous metal structure with good connectivity, and its ability to retain lubricating oil is excellent, allowing for oil-free use over long periods. It uses spherical bearings with self-aligning properties, making proper installation easy. 【Features】 ■ Long lifespan without lubrication ■ Easy installation ■ Wide range of applications (permissible PV value: 50 MPa·m/min) ■ Extensive lineup ■ Self-aligning *For more details, please download the PDF or feel free to contact us.

We would like to introduce our "Sintered Oil-Embedded Bearings Standard Series." Inside the bearings, there are countless pores, which absorb oil. As the shaft rotates, the oil seeps out and acts as a lubricant. Compared to rolling bearings, they excel in quietness. We offer two types: sleeve type and flange type. The material is a copper-based H material made from Cu and Sn, featuring excellent properties of "low friction," "quietness," and "wear resistance." 【Features】 ■ A wide range of sizes in the standard lineup ■ Immediate delivery available from just one piece ■ Superior quietness compared to rolling bearings ■ Two types: sleeve type and flange type *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "Bearing Unit Steel Series" that we handle. NTN steel housings excel in load-bearing capacity and impact resistance, making them suitable for applications where safety is a priority and where vibrations occur under heavy loads. Since they are made from general structural rolled steel, there are no strength instability factors associated with cast materials. The mounting dimensions are the same as NTN's conventional products, and they are compatible with bearing units from other domestic manufacturers. Please feel free to contact us when you need assistance. 【Features】 ■ Robust bearing box ■ Stable quality ■ Compatibility *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "Bearing Unit Stainless Series" that we handle. Compared to cast iron units, it has excellent corrosion resistance, and by equipping the bearing box with a cover made of stainless steel plate with a rubber seal or a closed stainless steel plate cover, outstanding dust-proofing is achieved. The bearing box has a smooth casting surface due to NTN's unique casting method, making it hygienic as foreign substances are less likely to adhere. The mounting dimensions are the same as NTN's cast iron units, and it is compatible with bearing units from other domestic manufacturers. 【Features】 ■ Excellent corrosion resistance ■ Excellent dust-proofing ■ Clean appearance ■ Sealed with lubricant for food machinery ■ Compatibility with NTN cast iron units *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "Bearing Unit Ductile Series" that we handle. Thanks to NTN's casting technology, the bearing box has achieved a 40% weight reduction compared to conventional products. By minimizing the main dimensions other than the mounting relationships, it has become possible to install in even narrower spaces. There are two types: oil-lubricated and maintenance-free. The oil-lubricated type is suitable for high temperature and high-speed operating conditions. It is also compatible with NTN's conventional products and bearing units from other domestic manufacturers, making replacement during repairs easy. 【Features】 ■ 40% weight reduction and compact design of the bearing box ■ Robust bearing box (approximately 30% stronger than conventional products) ■ Two types: oil-lubricated and maintenance-free ■ Compatibility *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "Bearing Unit with Triple Seal" that we handle. This bearing features a triple seal with three lip seals, providing superior dust and water resistance compared to standard unit bearings, allowing for a longer lifespan even in environments exposed to dust and contaminated water. The extension of maintenance inspection intervals is possible, leading to a reduction in maintenance-related costs and an improvement in machine operating rates. It is compatible with UC type bearings (JIS standard compliant), ensuring interchangeability with NTN's conventional products. 【Features】 ■ Achieves long bearing life with excellent dust and water resistance ■ Reduces maintenance-related costs ■ Lowers the cost of bearing units and compacts machinery ■ Tightening screws with balls that are resistant to loosening ■ Interchangeability *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "Bearing Unit Plastic Series" that we handle. Compared to conventional NTN cast iron units, it has excellent corrosion resistance, and the bearing box itself is non-magnetic and does not rust, making it suitable for a wide range of applications. The use of a resin bearing box has achieved a weight reduction of 30-60%. The ball bearings use NTN's unique thermosetting grease (P-03) encapsulated in poly-lube bearings, which minimizes lubricant leakage and prevents contamination of the surrounding environment. 【Features】 - Excellent corrosion resistance - Maintenance of a clean environment - Low bearing torque - Lightweight - Water and chemical resistance *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "Polylube Bearing" that we handle. This bearing uses a thermosetting grease primarily composed of lubricating grease and ultra-high molecular weight polyethylene. It is designed to minimize lubricant leakage even under strong vibrations and high centrifugal forces, thereby reducing environmental contamination compared to conventional lubricating greases. In the spot pack specification, Polylube is not stirred like grease, resulting in almost no stirring resistance, which is expected to reduce bearing torque. 【Features】 ■ Minimal lubricant leakage ■ Excellent lubricating properties ■ Expected reduction in bearing torque ■ Sealing effect ■ High safety (Polylube for food machinery is NSF H1 certified) *For more details, please download the PDF or feel free to contact us.

The "CROU-LL type" is a sealed four-row tapered roller bearing from the ULTAGE series, designed to achieve "high load capacity," "high load resistance," and "high sealing performance" required for steel roll neck applications. By maximizing the dimensions and number of rollers, it realizes high load capacity and extended lifespan. A new type of crowning has been adopted for the rolling elements, significantly improving load-bearing performance by equalizing the contact stress distribution between the rolling elements and the raceway. A "high sealing type" fluororubber seal with a reduced seal volume is standard. By optimizing the main lip's tension and incorporating an external foreign object shielding structure, it cuts internal water ingress by over 50% while preventing grease leakage with the secondary lip. 【Features】 ■ World-class high load capacity design ■ World-class load-bearing performance ■ Compact high-sealing design ■ Long-life grease as standard ■ 1.3 times the rated lifespan compared to our conventional products *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "Bearing with Rotary Sensor" that we handle. With a rich variety and high functionality, it contributes to the compactness of actual machines and improves reliability. The rotary sensor consists of a magnetic encoder (multi-pole magnet) and a magnetic sensor. The magnetic encoder is fixed to the inner ring (rotating ring) of the bearing, while the magnetic sensor is fixed to the outer ring (fixed ring) of the bearing. Detection of the rotation direction is also possible. 【Features】 ■ A unit product that integrates the bearing and rotary sensor, capable of detecting rotation speed and direction. ■ With a rich variety and high functionality, it contributes to the compactness of actual machines and improves reliability. *For more details, please download the PDF or feel free to contact us.

Bearings can suffer early damage in addition to their original rolling fatigue life. These occurrences are often due to inadequate handling and maintenance of the bearings. This booklet is intended to serve as a guide for preventing "accidents" such as early damage to bearings, and for investigating the causes and implementing appropriate countermeasures if an "accident" occurs. [Contents] ■ Preface ■ Maintenance and management of bearings ■ Inspections during machine operation ■ Observations of bearings after use ■ Bearing damage and countermeasures *For more details, please download the PDF or feel free to contact us.

"Bearing Inspector" is a bearing diagnostic software that supports stable operation of equipment by early detection of abnormalities in bearings, preventing unexpected failures. It reduces the burden of inspection work and enables efficient maintenance and stable production. Since "learning" and "diagnosis" are executed automatically, complex setup tasks are unnecessary, making it easy to implement in existing equipment. Leveraging the expertise cultivated by NTN, a bearing manufacturer, it algorithmically provides reliable diagnostic results compatible with various equipment. Anyone can easily obtain diagnostic results, contributing to solving issues such as labor shortages and dependency on specific individuals. [Features] ■ Professional diagnostics for everyone: NTN's unique diagnostic technology ■ For uninterrupted operations: Reliable real-time monitoring *For more details, please download the PDF or feel free to contact us.

The "ULTAGE Series" is a type of self-aligning roller bearing with an enhanced retainer, developed to meet the demands of industrial machinery used under harsh conditions (such as eccentric rotation and shock loads) for "long life," "vibration resistance," and "low temperature rise." By maximizing the roller diameter and number of rollers, we achieve the world's highest level of high load capacity, resulting in long life. The basic dynamic load rating has been increased by up to 9% compared to our conventional products. By reviewing the retainer shape and arranging the pockets in a staggered pattern, we have strengthened the retainer and improved vibration resistance. The retainer strength has been increased by up to 55% compared to our conventional products. 【Features】 ■ Long life ■ Vibration resistance ■ Low temperature rise ■ 200°C heat-resistant specification *For more details, please download the PDF or feel free to contact us.