HEF DURFERRIT JAPAN List of Products and Services

"STANAL 400" improves the wear resistance of stainless steel without compromising its corrosion resistance through a metal solid-phase diffusion treatment at 400°C. By precisely controlling the diffusion phenomenon within a thermal cycle capped at 400°C, a hard alloy layer that forms "STANAL 400" is generated. It allows for surface treatment without altering the characteristics of stainless steel or the mechanical properties of martensitic stainless steel. 【Features】 ■ Improved surface hardness ■ Enhanced wear resistance and galling resistance ■ Maintains the inherent oxidation resistance and corrosion resistance of stainless steel ■ Additional coating of solid lubricants is possible *For more details, please refer to the PDF document or feel free to contact us.

The "PEL BH3 Bush" is a machined bush that possesses excellent wear resistance and seizure resistance due to a combination of composite surface treatment and a shape designed to retain lubricating oil. It has very high resistance to wear and seizure, reducing the maintenance and upkeep costs of machines. It demonstrates high performance even under high surface pressure, corrosion, abrasive wear, impact, and poor maintenance. 【Features】 ■ Significant extension of lubrication intervals (up to 1000 hours) ■ Increased load capacity ■ Extended lifespan of joint parts ■ Very high resistance to wear and seizure ■ Reduction in machine maintenance and upkeep costs *For more details, please refer to the PDF document or feel free to contact us.

The "H-Liner Series" features resin bushes with excellent sliding properties. Since they can be used without lubrication, maintenance tasks such as oiling can be significantly reduced. They can be used in environments where the use of lubricants and the generation of metal wear particles are not allowed, and they demonstrate high wear resistance even under high loads, capable of withstanding dynamic surface pressures of up to 140 MPa. They are expected to be utilized in food and pharmaceutical factories, as well as battery manufacturing facilities, and the high-temperature resistant "SHT" can also be used in ovens and sterilizers. 【We can solve the following issues】 ◎ Do not want to use lubricating oil for hygiene management ◎ Do not want to generate metal wear particles due to sliding and wear ◎ Want to reduce the frequency of maintenance *For product details, please refer to the materials. Feel free to contact us with any inquiries.

"PEL BH" is a spherical sliding bearing that features a multi-layer surface treatment on each part, providing high surface hardness, automatic self-aligning capability, wear resistance, and seizure resistance. Grease reservoirs are provided between the inner ring and outer ring, as well as between the inner ring and pin/shaft, to maintain lubrication. It demonstrates high adaptability to misalignment. It is particularly effective in harsh locations with heavy loads, such as construction machinery and special vehicles, and has been adopted in subway vehicles in Tokyo. 【Features】 ■ High adaptability to misalignment ■ Excellent wear resistance, seizure resistance, and corrosion resistance ■ Outstanding overload resistance, abrasive wear resistance, and impact resistance ■ Requires almost no maintenance *The materials can be viewed immediately via [PDF Download]. Please feel free to contact us with any inquiries.

The "PEL BH-R Bush" exhibits excellent wear resistance, seizure resistance, and corrosion resistance even in extreme sliding environments. Multi-layer surface coatings and appropriately placed dimples serve as grease reservoirs. This disperses and reduces concentrated loads applied locally, achieving optimal load distribution. By adopting this bush, the lubrication interval can be significantly extended. 【Features】 ■ Excellent wear resistance and seizure resistance ■ Excellent load-bearing capacity, corrosion resistance, abrasive wear resistance, and impact resistance ■ No frequent maintenance required ■ Significantly extended lubrication interval *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

The "H-Liner SHT" is a bushing that exhibits excellent sliding properties even under high temperatures (up to 285°C) and in a non-lubricated condition, thanks to the adoption of high-performance composite materials. 【Recommended Tolerances】 ■ Housing side: h7-h8 ■ Pin side: h7-h8 *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

The "H-LINER S" is a composite material bush with a structure that adheres a friction liner to the inner peripheral surface of glass fiber reinforced resin. It far exceeds the mechanical properties of injection molded plastics and does not require lubrication work. It can accommodate various component shapes such as sliding plates and spherical bearings. 【Features】 ■ Maintenance-free ■ Self-lubricating ■ Capable of handling high loads ■ Lightweight ■ Noise reduction *For more details, please refer to the catalog. Feel free to contact us as well.

The "H-Liner M" is a composite material bushing formed by weaving and molding a uniformly high-sliding resin throughout. It can be molded into various component shapes such as cylindrical shapes and sliding plates. It has been developed for use without lubrication. Press fitting and assembly using liquid nitrogen for cooling are optimal. 【Features】 ■ Maintenance-free ■ Capable of molding complex shapes ■ Low water absorption rate ■ Lightweight ■ Excellent core misalignment adaptability *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

HEF DURFERRIT has been developing a series of bushes that can meet a wide range of customer needs for the past 20 years, based on expertise in surface treatment and deep knowledge of tribology. The bushes developed and manufactured by the HEF Group are characterized by special surface treatments and surface geometries (such as cross-hatching and cavities). We provide optimal proposals that match your needs, from reasonably priced products to high-performance items. 【Features of HEF Bushes】 - High wear resistance contributing to cost reduction - Long-lasting stable low wear characteristics, extended lifespan, long spans - High seizure resistance - Regular lineup that meets all needs For more details, please contact us or download the catalog.

Founded in 1953 in France as the Tribology Research Center, the H.E.F Group has developed numerous technologies related to surface treatment processing of materials, obtained patents, and sold licenses worldwide. Furthermore, in recent years, it has also developed surface treatment processes for resin housings and added electromagnetic shielding coating services to its lineup. The company is expanding its business globally. The H.E.F Group has both research and development and manufacturing facilities, allowing for customization to meet customer needs. The H.E.F Group places importance on establishing a presence close to its clients and has many factories around the world. In Japan, HEF DURFERRIT JAPAN Co., Ltd. collaborates with three domestic factories to meet the needs of Japanese customers. 【Service Introduction】 ○ Contract research services related to tribology ○ Salt bath soft nitriding treatment services ○ PVD and PACVD coating services ○ Manufacturing and sales of bushes and sliding components For more details, please contact us or download the catalog.

The "COD11 Bush" is made of aluminum bronze with special treatment, exhibiting excellent oxidation resistance, seizure resistance, and abrasive wear resistance. Compared to brass and other copper alloy bushes, it shows remarkable improvement effects in various applications. Additionally, the special surface treatment applied to the bush achieves high surface hardness, excellent seizure resistance, abrasive wear resistance, and adhesion resistance. 【Features】 ■ Reduction of abrasive wear ■ Improvement of seizure resistance ■ Enhanced load-bearing capacity / Extended lubrication intervals ■ Proper distribution of grease across the entire sliding surface with cross-hatching ■ Maintenance of ideal load distribution within the sliding surface *For more details, please refer to the PDF document or feel free to contact us.

The "FAM Bush" is made of manganese steel and exhibits excellent abrasive wear resistance with a special pattern engraved on the sliding surface. The sliding surface has been subjected to mechanical surface hardening treatment to withstand mechanical stress (impact, dust environment) sufficiently. Additionally, it is finished very smoothly with a special pattern engraved. 【Features】 ■ Demonstrates impact resistance ■ Reduces abrasive wear ■ Shows resistance to seizure (even under non-lubricated conditions) ■ Sliding surface has undergone mechanical surface hardening treatment *For more details, please refer to the PDF document or feel free to contact us.

"TESCO Bush" is made of alloy steel with high mechanical strength and is further treated with a composite surface treatment. This surface treatment demonstrates high abrasive wear resistance under extremely harsh operating conditions such as high temperatures and high loads. Additionally, it is made of alloy steel with a hardness of HRC 50 or higher. 【Features】 ■ Excellent sliding characteristics due to the special treatment applied to the surface ■ Extremely high abrasive wear resistance and load-bearing capacity even at high temperatures ■ The sliding surface is finished very smoothly and features a special pattern engraved on it ■ Captures foreign substances within the pattern, keeping the sliding surface in a constantly clean state *For more details, please refer to the PDF document or feel free to contact us.

The "PEL Bush" exhibits excellent wear resistance and seizure resistance through its composite surface treatment and the special pattern engraved on the sliding surface. The special pattern engraved on the sliding surface acts as a large grease reservoir, evenly distributing grease throughout the entire sliding surface. Additionally, it captures foreign particles within this pattern, keeping the sliding surface in a constantly clean state. 【Features】 ■ Resistance to seizure and extended lubrication intervals ■ High load capacity ■ Wear resistance under severe operating conditions ■ The surface of the bush treated with a special surface treatment shows high hardness ■ Excellent abrasive wear resistance, seizure resistance, and corrosion resistance *For more details, please refer to the PDF document or feel free to contact us.

Introducing the features of sliding components for the steel industry. The sliding components (COD11) used in the continuous casting dummy bar system by HEF have excellent wear resistance and lubricant retention capabilities. Additionally, the use of COD11 bushes has reduced wear by a factor of 1/15 compared to conventional materials. 【Features】 ■ Excellent wear resistance ■ Reduced lubrication frequency ■ Maintenance-free ■ Outstanding heat resistance ■ Wear reduced to 1/15 of conventional materials *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce our "Sliding Parts for Material Handling Equipment." The HEF sliding parts "H-Liner Series," used in truck cranes and other applications, are self-lubricating resin bushes, eliminating the need for oil or grease. Since no lubrication work is required, there is no downtime due to bush maintenance. The HEF Group offers reliable solutions based on over 60 years of accumulated research results. Please feel free to contact us. 【Features】 ■ Excellent wear resistance ■ Reduced lubrication frequency ■ Maintenance-free ■ Outstanding load capacity * Performance examples, application cases, and comparisons of bush wear amounts are also available in PDF format. * For more details, please refer to the PDF materials or feel free to contact us.