61818-ZZ Thin Wall Deep Groove Ball Bearing 90×115×13 Double Metal Shield Miniature Precision Bearing

61818-ZZ belongs to 61800 ultra-thin wall metric deep groove ball bearing series, standard dimension d90×D115×B13mm. Suffix ZZ means double sides non-contact stamped metal dust shields, blocking dry dust, fiber debris and fine particles while reducing rotational resistance for high-speed operation.

Ultra-narrow width thin-wall structure greatly saves radial and axial installation space, ideal for lightweight compact automation devices. Internal deep groove raceway design supports combined radial load and slight bidirectional axial load. All inner ring, outer ring and steel balls adopt fully quenched GCr15 bearing steel with mirror superfinished rolling surface, stable low-vibration performance under long continuous high-speed rotation. PA nylon cage evenly separates steel balls to avoid collision noise. Pre-filled low-viscosity high-speed lithium grease inside, suitable for dry, dust-free workshop transmission scenarios without water splash. Widely used in textile machinery, printing equipment, medical instruments, packaging automation and miniature high-speed rotating spindles.

Complete thin-wall spindle installation drawings, light load matching guide and long-cycle high-speed dust-proof durability test reports can be provided upon customer request.

• Ultra-thin 13mm width thin-wall outline, minimal space occupation, perfect for compact automation equipment with strict internal layout limits.
• Double ZZ metal dust shield non-contact design, low rotational friction loss, higher limit speed compared with rubber sealed 2RS versions.
• Smooth superfinished deep raceway, uniform steel ball contact stress distribution, outstanding anti-fatigue and low-noise performance during long high-speed operation.
• Lightweight PA66 nylon solid cage, small centrifugal force at high rotation speed, stable ball positioning without shedding under frequent forward-reverse switching.
• Fully quenched bearing steel components reach HRC60–65 hardness, excellent wear resistance to extend service life of textile and printing production lines.
• Non-contact ZZ shield only blocks dry dust, no friction with inner ring shoulder, less heat generation for uninterrupted high-speed spindle running.
• Standard metric interchangeable dimension, fully compatible with global 61818 series thin wall bearings, direct replacement without modifying shaft and housing.
• Comprehensive customized service: P6/P4 high precision upgrade, C3 clearance adjustment, OEM laser marking, neutral export carton anti-rust packaging, high-speed special grease pre-filling.

61818-ZZ double metal shield thin wall deep groove ball bearing is core compact high-speed rotating spare part for light industrial precision automation equipment:

• Textile spinning loom, yarn winding machine high-speed spindle bearing assemblies
• Digital printing machine, label slitting equipment light load transmission matching units
• Medical testing instruments, disinfection equipment internal miniature rotating positions
• Automatic carton packaging machinery, feeding roller low-noise support components
• Laboratory precision testing equipment, small high-speed centrifugal rotating bearings

Aftermarket interchangeable 61800 series ZZ shield thin wall deep groove ball bearing

Cost-effective space-saving high-speed miniature bearing solution for textile machinery manufacturers, printing automation OEM and precision equipment maintenance factories bulk procurement.

• 25 years professional manufacturing experience of 61800 thin wall deep groove ball bearings including 61818-ZZ
• 61818-ZZ fully dimensionally interchangeable with international standard 90×115×13 thin section bearings, consistent high-speed rotation tolerance, ZZ dust shielding and load rating standards.
• Complete OEM & ODM customization service supporting P4 super precision grade, C3 enlarged clearance and high-speed low-friction special grease filling.
• Strict full pre-delivery inspection flow: GCr15 raw material metallographic & hardness test, steel ball dimensional sorting screening, long-cycle continuous high-speed rotation aging test, repeated dry dust sealing wear simulation test.
• Professional thin-wall bearing engineering team provides one-on-one radial-axial light load calculation, transmission shaft tolerance matching and press-fit installation technical guidance within 24 working hours.
• Stable mass production workshop with competitive factory direct bulk wholesale price for large-volume single model orders, long-term stable supply for global textile, printing and medical automation equipment spare parts buyers.

We specialize in ultra-thin wall compact deep groove bearing structure, double ZZ low-friction dust shield design, universal metric interchangeable mounting dimension standard and long-term win-win cooperation with high-speed precision transmission equipment suppliers.

• Raw material chemical composition, internal flaw and hardness inspection for GCr15 bearing steel inner ring, outer ring and steel ball blanks
• Bearing ring precision forging, multiple tempering stress relief, multi-step ultra-precision deep raceway grinding process
• Steel ball high-temperature quenching, mirror polishing and high-precision automatic dimensional sorting production line
• PA nylon cage injection molding, double ZZ metal shield stamping & press fitting assembly process, strictly control shield concentricity and gap
• Targeted classified performance testing: 61818-ZZ long-cycle high-speed continuous rotation aging test, repeated dry dust particle sealing durability test, low-noise long-cycle wear detection
• Full dimensional tolerance, surface burr and shield tightness recheck before anti-rust oil coating and export carton moisture-proof packaging shipment

Every production batch of 61818-ZZ bearings undergoes full sampling textile high-speed spindle simulation rotation test to guarantee stable long-term low-noise compact high-speed rotating support performance in precision automation equipment.

If you need 61818-ZZ double metal shield thin wall high-speed ball bearings for textile machinery manufacturing, printing automation assembly and miniature precision equipment maintenance bulk matching, send your purchase inquiry directly.

You will receive full professional supporting services after submitting inquiry:

• Fast official factory sealed formal quotation reply within 24 working hours
• One-on-one light radial-axial load calculation, transmission shaft tolerance matching and thin-wall housing press-fit installation technical guidance from professional thin-wall bearing engineers
• Customized bearing performance solutions including P4 high precision upgrade and C3 enlarged clearance options
• Competitive direct factory bulk wholesale price for large-volume 61818-ZZ single model orders

Provide your required purchase quantity, equipment continuous rotation speed and dry dusty workshop working environment to obtain detailed formal quotation document.

8. FAQ

Q1: What does ZZ mean for 61818-ZZ?

A1: ZZ stands for double sides stamped non-contact metal dust shields, suitable for dry dust environments without water splash.

Q2: What is the advantage of thin wall 61818 series?

A2: Ultra-narrow width and thin outer ring design, save axial and radial installation space for compact miniature equipment.

Q3: Can 61818-ZZ work in water-washing environment?

A3: Not recommended; metal ZZ shields cannot block liquid splash, choose 2RS rubber sealed version for wet conditions.