NK10-Z-XL Single Direction Stainless Steel Roller Bearings / NK10-XL Needle Roller Thrust Ball Combined Bearing

1. Product Overview

NK10-XL and NK10-Z-XL are metric machined solid outer ring needle roller bearings without inner ring, unified basic dimension Fw=10mm matching shaft diameter, outer diameter D=19mm, overall width C=16mm. XL suffix represents optimized lightweight standardized production structure for global general industrial matching standards.

• NK10-XL: Basic open machined needle bearing, both ends open design for excellent heat dissipation and convenient periodic re-lubrication, fit clean dry continuous operation equipment;
• NK10-Z-XL: Single side Z non-contact stamped steel dust shield variant based on NK10-XL base structure, blocks dry coarse dust and metal debris without increasing rotational friction loss, suitable for slightly dusty dry processing workshops.

Different from thin drawn cup HK/HK series, NK series adopts thick solid turned outer ring with high structural rigidity and strong anti-deformation capacity under heavy impact radial load. Stamped steel cage evenly separates dense cylindrical needle rollers for large contact bearing area. Matching shaft surface must be quenched to HRC60–64 with mirror superfinishing to serve as inner raceway. This bearing only bears pure radial load, widely used for miniature reduction gearboxes, handheld power tools, textile tension rollers, automation cam sliding assemblies and light industrial compact transmission equipment with narrow radial installation space.

2. Technical Specifications

Unified Base Standard Parameters

NK10-XL

NK10-Z-XL

Complete dimensional drawings and full dynamic/static load test data of two models are available upon customer request.

3. Key Advantages

1. Thick solid machined outer ring design, far higher rigidity and impact resistance than thin drawn cup needle bearings, no outer ring deformation under heavy alternating radial load
2. Two protection configurations (open / single Z metal shield) match different dry working environments: clean dust-free workshop and dry workshop with solid particle debris
3. Z non-contact steel dust shield produces zero additional rolling friction, will not reduce limit rotation speed while blocking coarse dry dust, better high-speed performance than contact RS rubber seals
4. Dense uniform needle roller layout provides outstanding radial load capacity and stable running rigidity, suitable for medium heavy load frequent start-stop transmission conditions
5. Stamped steel cage stable roller positioning, low friction loss and good heat dissipation, support long-cycle non-stop continuous equipment operation
6. Customizable options: double ZZ steel shields, single/double RS rubber contact seals, C3 enlarged radial clearance, stainless steel anti-rust outer ring, OEM laser marking and high-temperature special grease filling

Effectively improve transmission system rigidity and reduce gearbox bearing deformation failure rate under heavy load

4. Applications

This NK10-XL / NK10-Z-XL solid outer ring machined needle roller bearing set is widely matched for the following compact light & medium industrial equipment:

• Miniature reduction gearboxes, small transmission box intermediate shaft supporting assemblies
• Handheld electric power tools, garden miniature machinery rotary moving parts
• Textile weaving looms, small printing equipment tension roller sliding units
• Automation equipment cam rotary positioning components and miniature linear sliding supports
• Light packaging machinery, small household electrical appliance lightweight transmission assemblies
• Aftermarket replacement spare parts for 10mm bore solid outer ring machined needle roller bearing equipment

Ideal high-rigidity heavy-load needle bearing solution for narrow radial space dry environment industrial transmission equipment

5. Why Choose GQZ Bearing

• 25 years of professional NK series machined solid outer ring needle roller bearing manufacturing experience
• Two models fully dimensionally interchangeable with international standard NK10 XL series bearings, consistent outer ring precision and load performance indicators
• Complete OEM & ODM customized service supporting ZZ double shield, RS sealing, stainless steel outer ring and special clearance customization
• Full-process strict inspection: raw material hardness testing, outer ring turning & grinding precision, Z shield assembly tightness and heavy load fatigue cycle testing before delivery
• Professional needle bearing engineering team provides housing tolerance and matching shaft hardness installation guidance within 24 hours
• Stable large-scale mass production assembly lines with preferential bulk wholesale price for long-term machinery equipment manufacturers

We focus on high rigidity anti-deformation performance, reliable dust resistance and long-term win-win cooperation with global industrial buyers

6. Quality Control

• Raw material chemical composition and surface hardness inspection of GCr15 chrome bearing steel
• Precision turning, heat treatment and raceway mirror superfinishing processing for solid outer ring
• Constant temperature quenching & tempering heat treatment process to stabilize outer ring internal stress and enhance surface wear resistance
• Comprehensive targeted performance testing: open type continuous high-speed durability test, Z shield dust blocking test, radial clearance uniformity and dynamic/static load capacity inspection
• Uniform needle roller cage assembly inspection and separate dimensional & appearance re-inspection for each model before anti-rust packaging and shipment

Every batch of bearings passes full sampling heavy-load reciprocating cycle durability test to guarantee stable rigid operation under medium heavy radial load

7. Get a Quote Now

If you need high rigidity NK10-XL open type and NK10-Z-XL single steel shield machined needle roller bearings for miniature gearbox and dry automation processing equipment, send your inquiry to us directly.

You will receive full professional supporting services after submitting inquiry:

• Fast official factory quotation reply within 24 hours
• One-on-one housing tolerance & matching shaft hardness parameter matching guidance by professional bearing engineers
• Customized bearing solution suggestions including ZZ double shield and RS sealed variants and stainless steel anti-rust outer ring options
• Competitive direct factory bulk wholesale price for mixed two-model combined bulk orders

Send your required purchase quantity of each model and equipment working environment to obtain detailed formal quotation

8. FAQ

1. Q1: What does suffix Z and XL mean?
   A1: XL = optimized standardized lightweight production version; Z = single-side non-contact thin steel dust shield for blocking dry coarse dust.
2. Q2: What is the core advantage of NK machined needle bearings compared with HK drawn cup bearings?
   A2: NK adopts thick solid machined outer ring with ultra-high rigidity, not easy to deform under heavy impact load; HK uses thin stamped drawn cup, only suitable for light load low impact working conditions.
3. Q3: Can Z steel shield isolate water and cutting fluid?
   A3: No, Z shield only blocks dry solid dust particles, cannot resist liquid splash; choose RS rubber contact seal for humid or oily workshop environments.