®Multi-pocket geometry
Internal pockets and webs reveal the machining detail within a complex structure.
PC · PRECISION CUSTOM
YOUR VISION.
PRECISELY
ENGINEERED.为您的构想，
精密定制。
BILLET PISTONS · PRECISION CUSTOMBillet 全机加工活塞 · 高端定制
Precision custom development for billet piston projects. Bring your engine requirements, samples or design brief.精耐德旗下高端定制品牌，专注 billet 活塞的精密制造与专属开发。以您的发动机、样品与设计要求为起点。
Discuss your PC project沟通 PC 定制项目
A premium custom brand within JND精耐德旗下高端定制品牌
®BILLET · Geometry shaped by precision machining.
BILLET · MACHINED FROM SOLID
Complex geometry.
Precision in the details.
Actual JND billet piston photographs, exploring custom geometry and machining detail from crown to internal cavity.
Pin bosses and skirt layout
A closer view of the connections between the pin bosses, inner cavity and skirt.
Project-specific crown geometry
Crown development considers combustion-chamber and valve geometry, with the final design agreed for each project.
Contours and machining detail
A close view of internal contours, transitions and the visible toolpath texture.
These photographs show different structures from actual JND billet products. Material, specifications and engine suitability are confirmed for each project.
DESIGN TO REALITY
From CAD geometry
to a physical product.
Explore the corresponding CAD model and physical product, with a closer look at the pin bosses, internal cavity and skirt.
Crown contours and relief areas
A closer view of the crown profile and visible machining texture.
Internal geometry and pin bosses
A close view of the internal structure and pin-boss connections.
TWO-STROKE · BILLET CUSTOM
Tall profiles.
Demanding geometry.
These two-stroke billet pistons feature tall skirt profiles, illustrating a demanding custom machining project. Overall height, pin-bore layout and internal geometry guide the development of the machining approach.
See the development process查看开发流程A PROJECT, FROM START TO FINISH让需求形成产品
Design. Develop.
Make it real.从设计开发，
到加工成品。
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3D design illustration三维设计示意" loading="lazy">3D design illustration三维设计示意
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This JND workflow example follows a piston-blank machining route. Billet projects use a separately agreed stock-preparation and machining plan.此精耐德流程示例采用毛坯加工路线；billet 项目另行确定棒料准备与加工方案。
CHOOSE THE RIGHT ROUTE选择合适的开发路线
The right geometry.
The right manufacturing route.从结构到工艺，
围绕应用展开。
The manufacturing route is a design decision, not a substitute for a complete engineering brief.制造路线应服务于设计，不能代替完整的技术需求沟通。
Billet
Machined from solid stock. Discuss the design, quantity and material requirements before selecting this route.由整块材料加工而成，需结合设计、数量及材料要求讨论是否采用。
Forged锻造
A forged blank is machined to the agreed geometry. Blank availability and design requirements are part of the review.以锻造坯料加工到约定结构，需结合坯料条件与设计要求评估。
Project availability and process selection require technical confirmation.具体项目能否采用相应工艺，需经技术确认。
THE PC APPROACHPC 品牌理念
Precision at the core.
Performance in mind.以精密为本，
为性能而定制。
An ambitious engine project rarely starts with a standard answer. It starts with a goal, a set of constraints and the details that make that engine different. PC was shaped around that conversation.一项有追求的发动机项目，往往没有现成答案。它始于性能目标、实际约束，以及让这台发动机与众不同的细节。PC 围绕这样的需求展开。
From a billet piston brief to a specific crown, pin or ring requirement, the focus stays on the relationship between design and manufacture. Understand the application. Define the geometry. Work through the details.从 billet 活塞开发，到顶面、销孔和活塞环组的具体要求，PC 关注设计与制造之间的衔接：理解应用，明确结构，细化要求。
Within JND, PC is the dedicated space for precision custom development — where a customer’s requirements guide the project rather than an off-the-shelf catalogue.作为精耐德旗下高端定制品牌，PC 以客户项目需求为起点，将精密制造融入专属开发。
Cylinder-head reference for custom piston designA STRONGER PROJECT BRIEF让项目沟通更充分
Bring the challenge.
We’ll work through the details.带来您的问题，
一起明确细节。
Application应用场景
Engine model, intended use and the development goal.发动机型号、使用场景和开发目标。
Reference参考资料
An existing sample, non-confidential dimensions or design requirements.现有样品、可沟通的尺寸或设计要求。
Scope项目范围
Approximate quantities, sample needs and your expected timeline.预估数量、样品需求和期望时间。
PC / DETAIL IS THE DIFFERENCEPC / 以细节体现专注
Complex geometry. A focused development brief.复杂结构，专注开发。
01
Pockets, webs and transitions内腔、加强结构与过渡
Actual billet-machined product details show the relationship between internal cavities, supporting webs and tool access.棒料加工产品实拍呈现内部型腔、加强结构与加工可达性之间的关系。
Explore this detail进一步了解 ↗02
Tall two-stroke profiles高轮廓两冲程活塞
Tall profiles and deep internal features bring particular machining challenges. Discuss the geometry and manufacturing plan for your project.较高轮廓与较深内腔对加工提出特殊要求，需针对项目讨论结构与制造方案。
Explore this detail进一步了解 ↗03
Project-specific crown development针对项目开发的顶型
Crown shape and valve-relief areas are developed from the engine configuration, with final dimensions and clearances confirmed in the project.围绕发动机配置开发顶部形状与气门避让区域，最终尺寸与间隙在项目中确认。
Explore this detail进一步了解 ↗PIN SUPPORT & LUBRICATION活塞销支撑与润滑
Support where the loads meet.在载荷交汇处，重视支撑与润滑。
Dual forced pin oiling双强制销油孔
Standard-equipped models feature dual forced pin oil holes and accumulator grooves to support lubrication and stability at high engine speeds.相应标配型号设有双强制销油孔与蓄能槽，有助于高转速工况下的润滑与稳定性。
A matched component package匹配的配套组合
Applicable packages include 9310 nickel-alloy steel pins, a complete ring set and aluminium pin-boss support. The supplied components are specified with the piston.适用配套方案包含9310镍合金钢活塞销、全套环组及铝制销座支撑结构，配套件与活塞一并明确。
Heavy-duty pin upgradesHD 加强销升级
Selected high-output applications offer or recommend HD pins, including project configurations targeting 600+ or 1,000+ hp. Suitability depends on the engine, loads and complete specification.部分高功率应用提供或建议HD加强销升级，包括面向600+或1000+马力目标的项目配置。适用性需结合发动机、载荷与完整配置确定。
Features vary by model and application. Final alloy, components, clearances and installation requirements follow the confirmed product specification. Horsepower examples describe specific project configurations, not a universal piston rating.特点与配置因型号及应用而异。材料、配套件、间隙与装配要求以确认的产品技术规范为准；马力示例对应特定项目配置，并非全部活塞的通用额定值。
SURFACE & FRICTION CONTROL表面处理与摩擦控制
Engineered beyond the metal.精密制造，延伸至表面。
Molybdenum skirt coating裙部钼涂层
Molybdenum skirt coatings help reduce friction and improve running-in. Selected skirt-coating configurations also help control operating noise.裙部钼涂层有助于降低摩擦、改善磨合过程；适用的裙部涂层方案也有助于控制运行噪音。
Application-specific treatments针对应用的表面处理
A range of surface treatments supports service life and reliability. The finish is selected with the material, running clearance and operating conditions.通过多种表面处理支持使用寿命与可靠性，结合材料、运行间隙及工作条件选择处理方案。
PRECISION, PRESENTED.精密定制 · 品牌呈现
A considered finish. A distinct identity.精密之作，自有风格。
Explore two exterior design concepts for a four-piston set, bringing PC’s precision custom identity to the final presentation.四只装外包装设计，以金属质感与真实产品细节，延续 PC 的高端精密定制理念。
Midnight navy. Brushed steel.深蓝定制 · 金属质感
A restrained navy palette gives the metallic PC identity and internal machining detail a clear focus.沉稳深蓝衬托金属钢色标志，让内腔加工细节成为视觉焦点。
Silver precision. Engineering detail.银蓝工程 · 精密呈现
Silver-white surfaces and a cropped product detail connect the packaging to the engineering behind it.银白与深蓝相接，结合产品局部特写，呈现从设计到制造的精密感。
Packaging design concepts shown. Final format and specifications are agreed for each project.以上为包装设计效果示意，实际包装形式及规格按项目确认。
PRECISION CUSTOM