Kunshan, Suzhou, ChinaVerified product structure · Specification reviewkane.wjx@gmail.com
STANDARD BEARINGS传统轴承

COMPLETE PRODUCT FAMILY完整产品体系

Needle Roller Bearings滚针轴承

Compact bearings using long, small-diameter rollers to provide high radial capacity in restricted space.采用细长滚针,在有限径向空间内提供较高的径向承载能力。
Needle Roller Bearings

SERIES COVERAGE系列覆盖

The complete family—not a short list of models.展示完整产品体系,而不是少量型号。

Coverage is organized by structure and dimension family. Exact availability is confirmed against the selected manufacturer catalogue.按结构与尺寸系列说明产品覆盖范围,具体可供型号根据最终选择的制造商目录确认。
NO.SERIES OR FORM系列或形式SELECTION POSITION选型定位
01Drawn-cup needle bearings冲压外圈滚针轴承Included in ZOFANG selection and supply coverage.属于轴方选型与配套供应范围。
02Machined-ring needle bearings实体套圈滚针轴承Included in ZOFANG selection and supply coverage.属于轴方选型与配套供应范围。
03Needle roller and cage assemblies滚针与保持架组件Included in ZOFANG selection and supply coverage.属于轴方选型与配套供应范围。
04Combined and thrust needle bearings组合及推力滚针轴承Included in ZOFANG selection and supply coverage.属于轴方选型与配套供应范围。

STRUCTURE OPTIONS结构选择

Choose the construction around the operating condition.围绕实际工况选择产品结构。

With or without inner ring01

With or without inner ring带或不带内圈

Final structure, material, seal and internal design are confirmed before quotation.最终结构、材料、密封及内部设计在报价前确认。

Open or closed end02

Open or closed end开口或封口冲压外圈

Final structure, material, seal and internal design are confirmed before quotation.最终结构、材料、密封及内部设计在报价前确认。

Sealed variants03

Sealed variants密封结构

Final structure, material, seal and internal design are confirmed before quotation.最终结构、材料、密封及内部设计在报价前确认。

DESIGNATION GUIDE型号规则

Read and confirm the complete designation.识别并确认完整型号。

Confirm whether the shaft acts as raceway, required inner ring, envelope dimensions and lubrication.需确认轴是否直接作为滚道、是否需要内圈、安装包络尺寸及润滑方式。

Manufacturer suffixes are not automatically interchangeable. ZOFANG verifies the full designation, drawing and current technical catalogue before issuing final data.不同制造商的后缀不能默认互换。轴方会在提供最终数据前核对完整型号、图纸及当前有效的技术目录。

MODEL DATABASE型号数据库

Search the range by designation or dimensions.按型号或安装尺寸快速查询。

Dimensions in mm. Select a suffix only after checking sealing, clearance, accuracy, lubrication and operating conditions.尺寸单位为 mm。密封、游隙、精度、润滑及工况确认后,再确定完整后缀。
23 matching basic designations 个匹配的基础型号
MODEL / 型号SERIES / 系列d / 内径D / 外径B/T / 宽度/高度CONFIRMATION / 说明
NA4900NA49 series10 mm22 mm13 mm

Open basic designation; shields, seals, clearance and cage suffixes are selected separately.开式基础型号;防尘盖、密封、游隙及保持架后缀需另行确认。

NA4901NA49 series12 mm24 mm13 mm

Open basic designation; shields, seals, clearance and cage suffixes are selected separately.开式基础型号;防尘盖、密封、游隙及保持架后缀需另行确认。

NA4902NA49 series15 mm28 mm13 mm

Open basic designation; shields, seals, clearance and cage suffixes are selected separately.开式基础型号;防尘盖、密封、游隙及保持架后缀需另行确认。

NA4903NA49 series17 mm30 mm13 mm

Open basic designation; shields, seals, clearance and cage suffixes are selected separately.开式基础型号;防尘盖、密封、游隙及保持架后缀需另行确认。

NA4904NA49 series20 mm37 mm17 mm

Open basic designation; shields, seals, clearance and cage suffixes are selected separately.开式基础型号;防尘盖、密封、游隙及保持架后缀需另行确认。

NA4905NA49 series25 mm42 mm17 mm

Open basic designation; shields, seals, clearance and cage suffixes are selected separately.开式基础型号;防尘盖、密封、游隙及保持架后缀需另行确认。

NA4906NA49 series30 mm47 mm17 mm

Open basic designation; shields, seals, clearance and cage suffixes are selected separately.开式基础型号;防尘盖、密封、游隙及保持架后缀需另行确认。

NA4907NA49 series35 mm55 mm20 mm

Open basic designation; shields, seals, clearance and cage suffixes are selected separately.开式基础型号;防尘盖、密封、游隙及保持架后缀需另行确认。

NA4908NA49 series40 mm62 mm22 mm

Open basic designation; shields, seals, clearance and cage suffixes are selected separately.开式基础型号;防尘盖、密封、游隙及保持架后缀需另行确认。

NA4909NA49 series45 mm68 mm22 mm

Open basic designation; shields, seals, clearance and cage suffixes are selected separately.开式基础型号;防尘盖、密封、游隙及保持架后缀需另行确认。

NA4910NA49 series50 mm72 mm22 mm

Open basic designation; shields, seals, clearance and cage suffixes are selected separately.开式基础型号;防尘盖、密封、游隙及保持架后缀需另行确认。

NA4911NA49 series55 mm80 mm25 mm

Open basic designation; shields, seals, clearance and cage suffixes are selected separately.开式基础型号;防尘盖、密封、游隙及保持架后缀需另行确认。

Boundary dimensions are a selection aid, not a final quotation specification. Load rating, speed, mass, fillet and calculation factors are issued only after the exact construction and suffix are confirmed.安装尺寸用于初步选型,不等同于最终报价规格。额定载荷、转速、质量、倒角及计算系数仅在完整结构和后缀确认后提供。

TECHNICAL DATA REQUEST详细参数获取

Need load, speed, temperature or accuracy data?需要载荷、转速、温度或精度参数?

Send us the complete model, required quantity and operating condition. Our team will confirm the applicable technical sheet against the final material, seal, clearance and manufacturer series.请提供完整型号、需求数量和使用工况。我们会根据最终材质、密封、游隙及制造商系列,核对并提供适用的技术资料。

TECHNICAL DATA技术数据

Parameters confirmed for every quotation.每次报价都应确认的技术参数。

Performance values vary by size, construction, internal design and manufacturer. Numerical data is supplied after the complete designation is fixed.性能数值会随尺寸、结构、内部设计及制造商变化;确定完整型号后提供对应数值。
01

Boundary dimensions: bore, outside diameter and width边界尺寸:内径、外径和宽度

Confirmed against the selected source.根据最终选定资料确认。

02

Basic dynamic and static load ratings基本额定动载荷与静载荷

Confirmed against the selected source.根据最终选定资料确认。

03

Reference and limiting speeds参考转速与极限转速

Confirmed against the selected source.根据最终选定资料确认。

04

Internal clearance and preload内部游隙与预载要求

Confirmed against the selected source.根据最终选定资料确认。

05

Tolerance and precision class公差与精度等级

Confirmed against the selected source.根据最终选定资料确认。

06

Seals, shields, cage and lubricant密封、防尘盖、保持架与润滑

Confirmed against the selected source.根据最终选定资料确认。

07

Fit, temperature and contamination配合、温度与污染环境

Confirmed against the selected source.根据最终选定资料确认。

08

Complete manufacturer designation制造商完整型号与后缀

Confirmed against the selected source.根据最终选定资料确认。

COMMON APPLICATIONS常见应用

Selection starts with the application.正确选型从实际应用开始。

Automotive transmissions汽车变速机构Compact gearboxes紧凑型齿轮箱Power tools电动工具Printing and textile machinery印刷与纺织机械

SELECTION INPUT询价所需信息

Send a model, drawing or operating condition.提供型号、图纸或实际工况。

Send the complete designation, preferred brand, quantity and application. If no model is available, provide shaft and housing dimensions, load, speed, temperature and environment.请提供完整型号、品牌偏好、数量和应用;如果没有现成型号,请提供轴径、座孔、载荷、转速、温度与使用环境。
SUBMIT REQUIREMENT →提交产品需求 →
OFFICIAL TECHNICAL REFERENCE官方技术资料来源

Technical scope is organized from official manufacturer materials. Final values are confirmed against the selected brand, suffix and catalogue revision.技术范围依据制造商官方资料整理;最终数据按所选品牌、完整后缀及有效目录版本确认。

NSK Rolling Bearings catalogue