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Silicon carbide ball bearing with visible rings and rolling elements
Custom silicon carbide thrust bearing for corrosive chemical pump applications
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Two silicon carbide ceramic ball bearings with visible rolling elements

Silicon Carbide Bearings: Pump Bushings and Full Ceramic Ball Bearings

ADCERAX supplies SiC bushings and sleeves for sliding supports, plus full ceramic ball bearings for rolling assemblies in wear and chemical-exposure projects.

Parameter Value
Catalogue No. AT-SIC-ZC684CE
Material SSiC / RBSiC Silicon Carbide
Sliding supports Fixed bushings and rotating sleeves; shaft and housing interfaces to drawing
Custom configuration USSiC / RBSiC selection, grooves, holes and finished contact surfaces
Dimensions/Sizes Download PDF
Engineering RFQ Review
Small-Batch Custom Support
Drawing-Based Production
Drawing & Process Review
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What Is a Silicon Carbide Bearing?

A silicon carbide bearing is a ceramic bearing component made from SiC for use where metal bearings are limited by corrosion, abrasion, heat, or lubricant contamination. Compared with many metallic bearing surfaces, silicon carbide offers high hardness, low thermal expansion, chemical stability, and stable behavior under demanding industrial conditions.

In practical equipment, SiC bearings are often selected for chemical pumps, slurry systems, furnace drive assemblies, powder-handling machinery, and clean-process environments where bearing wear, swelling, corrosion, or lubrication failure may interrupt operation.

Dimensions of Silicon Carbide Bearing

sic bearing size

Silicon Carbide Bearing
Item NO. Product Size r (Min) Install Size
d（Inner Dia) D（Outer Dia） B（Height） da (Min) Max Max Max
AT-SIC-ZC684CE 4 9 2.5 0.1 4.8 / 8.2 0.1
AT-SIC-ZC694CE 4 11 4 0.15 5.2 / 9.8 0.15
AT-SIC-ZC604CE 4 12 4 0.2 5.6 / 10.4 0.2
AT-SIC-ZC624CE 4 13 5 0.2 5.6 / 11.4 0.2
AT-SIC-ZC634CE 4 16 5 0.3 6 / 14 0.3
AT-SIC-ZC685CE 5 11 3 0.15 6.2 / 9.8 0.15
AT-SIC-ZC695CE 5 13 4 0.2 6.6 / 11.4 0.2
AT-SIC-ZC605CE 5 14 5 0.2 6.6 / 12.4 0.2
AT-SIC-ZC625CE 5 16 5 0.3 7 / 14 0.3
AT-SIC-ZC635CE 5 19 6 0.3 7 / 17 0.3
AT-SIC-ZC686CE 6 13 3.5 0.15 7.2 / 11.8 0.15
AT-SIC-ZC696CE 7 15 5 0.2 7.6 / 13.4 0.2
AT-SIC-ZC606CE 8 17 6 0.3 8 / 15 0.3
AT-SIC-ZC626CE 9 19 6 0.3 8 / 17 0.3
AT-SIC-ZC636CE 10 22 7 0.3 8 / 20 0.3
AT-SIC-ZC687CE 7 14 3.5 0.15 8.2 / 12.8 0.15
AT-SIC-ZC697CE 7 17 5 0.3 9 / 15 0.3
AT-SIC-ZC607CE 7 19 6 0.3 9 / 17 0.3
AT-SIC-ZC627CE 7 22 7 0.3 9 / 20 0.3
AT-SIC-ZC637CE 7 26 9 0.3 9 / 24 0.3
AT-SIC-ZC688CE 8 16 4 0.2 9.6 / 14.4 0.2
AT-SIC-ZC698CE 8 19 6 0.3 10 / 17 0.3
AT-SIC-ZC608CE 8 22 7 0.3 10 / 20 0.3
AT-SIC-ZC628CE 8 24 8 0.3 10 / 22 0.3
AT-SIC-ZC638CE 8 28 9 0.3 10 / 26 0.3
AT-SIC-ZC689CE 9 17 4 0.2 10.6 / 15.4 0.2
AT-SIC-ZC699CE 9 20 6 0.3 11 / 18 0.3
AT-SIC-ZC609CE 9 24 7 0.3 11 / 22 0.3
AT-SIC-ZC629CE 9 26 8 0.3 11 / 24 0.3
AT-SIC-ZC639CE 9 30 10 0.6 13 / 26 0.6
AT-SIC-ZC6800CE 10 19 5 0.3 12 12 17 0.3
AT-SIC-ZC6900CE 10 22 6 0.3 12 12.5 20 0.3
AT-SIC-ZC6000CE 10 26 8 0.3 12 13 24 0.3
AT-SIC-ZC6200CE 10 30 9 0.6 14 16 26 0.6
AT-SIC-ZC6300CE 10 35 11 0.6 14 16.5 31 0.6
AT-SIC-ZC6801CE 12 21 5 0.3 14 14 19 0.3
AT-SIC-ZC6901CE 12 24 6 0.3 14 14.5 22 0.3
AT-SIC-ZC16001CE 12 28 7 0.3 14 / 26 0.3
AT-SIC-ZC6001CE 12 28 8 0.3 14 15.5 26 0.3
AT-SIC-ZC6201CE 12 32 10 0.6 16 17 28 0.6
AT-SIC-ZC6301CE 12 37 12 1 17 18 32 1
AT-SIC-ZC6802CE 15 24 5 0.3 17 17 22 0.3
AT-SIC-ZC6902CE 15 28 7 0.3 17 17 26 0.3
AT-SIC-ZC16002CE 15 32 8 0.3 17 / 30 0.3
AT-SIC-ZC6002CE 15 32 9 0.3 17 19 30 0.3
AT-SIC-ZC6202CE 15 35 11 0.6 19 20.5 31 0.3
AT-SIC-ZC6302CE 15 42 13 1 20 22.5 37 1
AT-SIC-ZC6803CE 17 26 5 0.3 19 19 24 0.3
AT-SIC-ZC6903CE 17 30 7 0.3 19 19.5 28 0.3
AT-SIC-ZC16003CE 17 35 8 0.3 19 / 33 0.3
AT-SIC-ZC6003CE 17 35 10 0.3 19 21.5 33 0.3
AT-SIC-ZC6203CE 17 40 12 0.6 21 23.5 36 0.6
AT-SIC-ZC6303CE 17 47 14 1 22 25.5 42 1
AT-SIC-ZC6403CE 17 62 17 1.1 23.5 / 55.5 1
AT-SIC-ZC6804CE 20 32 7 0.3 22 22.5 30 0.3
AT-SIC-ZC6904CE 20 37 9 0.3 22 24 35 0.3
AT-SIC-ZC16004CE 20 42 8 0.3 22 / 40 0.3
AT-SIC-ZC6004CE 20 42 12 0.6 24 25.5 38 0.6
AT-SIC-ZC6204CE 20 47 14 1 25 26.5 42 1
AT-SIC-ZC6304CE 20 52 15 1.1 26.5 28 45.5 1
AT-SIC-ZC6404CE 20 72 19 1.1 26.5 / 65.5 1
AT-SIC-ZC6805CE 25 37 7 0.3 27 27 35 0.3
AT-SIC-ZC6905CE 25 42 9 0.3 27 28.5 40 0.3
AT-SIC-ZC16005CE 25 47 8 0.3 27 / 45 0.3
AT-SIC-ZC6005CE 25 47 12 0.6 29 30 43 0.6
AT-SIC-ZC6205CE 25 52 15 1 30 32 47 1
AT-SIC-ZC6305CE 25 62 17 1.1 31.5 36 55.5 1
AT-SIC-ZC6405CE 25 80 21 1.5 33 / 72 1.5
AT-SIC-ZC6806CE 30 42 7 0.3 32 32 50 1
AT-SIC-ZC6906CE 30 47 9 0.3 32 34 57 1
AT-SIC-ZC16006CE 30 55 9 0.3 32 42.5 65.5 1
AT-SIC-ZC6006CE 30 55 13 1 35 36.5 53 1
AT-SIC-ZC6206CE 30 62 16 1 35 38.5 60 1
AT-SIC-ZC6306CE 30 72 19 1.1 36.5 42.5 68.5 1
AT-SIC-ZC6406CE 30 90 23 1.5 54 / 82 2
AT-SIC-ZC6807CE 35 47 7 0.3 37 37 45 0.3
AT-SIC-ZC6907CE 35 55 10 0.6 39 39 51 0.6
AT-SIC-ZC16007CE 35 62 9 0.3 37 / 60 0.3
AT-SIC-ZC6007CE 35 62 14 1 40 41.5 57 1
AT-SIC-ZC6207CE 35 72 17 1.1 41.5 44.5 65.5 1
AT-SIC-ZC6307CE 35 80 21 1.5 43 47 72 1.5
AT-SIC-ZC6407CE 35 100 25 1.5 43 / 92 1.5
AT-SIC-ZC6808CE 40 52 7 0.3 42 42 50 0.3
AT-SIC-ZC6908CE 40 62 12 0.6 44 46 58 0.6
AT-SIC-ZC16008CE 40 68 9 0.3 42 / 66 0.3
AT-SIC-ZC6008CE 40 68 15 1 45 47.5 63 1
AT-SIC-ZC6208CE 40 80 18 1.1 46.5 50.5 73.5 1
AT-SIC-ZC6308CE 40 90 23 1.5 48 53 80 1.5
AT-SIC-ZC6408CE 40 110 27 2 49 / 101 2
AT-SIC-ZC6809CE 45 58 7 0.3 47 47.5 56 0.3
AT-SIC-ZC6909CE 45 68 12 0.6 49 50 64 0.6
AT-SIC-ZC16009CE 45 75 10 0.6 49 / 71 0.6
AT-SIC-ZC6009CE 45 75 16 1 50 53.5 70 1
AT-SIC-ZC6209CE 45 85 19 1.1 51.5 55.5 78.5 1
AT-SIC-ZC6309CE 45 100 25 1.5 53 61.5 92 1.5
AT-SIC-ZC6409CE 45 120 29 2 54 / 111 2
AT-SIC-ZC6810CE 50 65 7 0.3 52 52.5 63 0.3
AT-SIC-ZC6910CE 50 72 12 0.6 54 55 68 0.6
AT-SIC-ZC16010CE 50 80 10 0.6 54 / 76 0.6
AT-SIC-ZC6010CE 50 80 16 1 55 58.5 75 1
AT-SIC-ZC6210CE 50 90 20 1.1 56.5 60 83.2 1
AT-SIC-ZC6310CE 50 110 27 2 59 68 101 2
AT-SIC-ZC6410CE 50 130 31 2.1 61 / 119 2
AT-SIC-ZC6811CE 55 72 9 0.3 57 59 70 0.3
AT-SIC-ZC6911CE 55 80 13 1 60 61.5 75 1
AT-SIC-ZC16011CE 55 90 11 0.6 59 / 86 0.6
AT-SIC-ZC6011CE 55 90 18 1.1 61.5 64 83.5 1
AT-SIC-ZC6211CE 55 100 21 1.5 63 66.5 92 1.5
AT-SIC-ZC6311CE 55 120 29 2 64 72.5 111 2
AT-SIC-ZC6411CE 55 140 33 2.1 66 / 129 2
AT-SIC-ZC6812CE 60 78 10 0.3 62 64 76 0.3
AT-SIC-ZC6912CE 60 85 13 1 65 66 80 1
AT-SIC-ZC16012CE 60 95 11 0.6 64 / 91 0.6
AT-SIC-ZC6012CE 60 95 18 1.1 66.5 69 88.5 1
AT-SIC-ZC6212CE 60 110 22 1.5 68 74.5 102 1.5
AT-SIC-ZC6312CE 60 130 31 2.1 71 79 119 2
AT-SIC-ZC6412CE 60 150 35 2.1 71 139 2
AT-SIC-ZC6813CE 65 85 10 0.6 69 69 81 0.6
AT-SIC-ZC6913CE 65 90 13 1 70 71.5 85 1
AT-SIC-ZC16013CE 65 100 11 0.6 69 / 96 0.6
AT-SIC-ZC6013CE 65 100 18 1.1 71.5 73 93.5 1
AT-SIC-ZC6213CE 65 120 23 1.5 73 80 112 1.5
AT-SIC-ZC6313CE 65 140 33 2.1 76 85.5 129 2
AT-SIC-ZC6814CE 70 90 10 0.6 74 74.5 86 0.6
AT-SIC-ZC6914CE 70 100 16 1 75 77.5 95 1
AT-SIC-ZC16014CE 70 110 13 0.6 74 / 106 0.6
AT-SIC-ZC6014CE 70 110 20 1.1 76.5 80.5 103.5 1
AT-SIC-ZC6214CE 70 125 24 1.5 78 84 117 1.5
AT-SIC-ZC6314CE 70 150 35 2.1 81 92 139 2
AT-SIC-ZC6815CE 75 95 10 0.6 79 79.5 91 0.6
AT-SIC-ZC6915CE 75 105 16 1 80 82 100 1
AT-SIC-ZC16015CE 75 115 13 0.6 79 / 111 0.6
AT-SIC-ZC6015CE 75 115 20 1.1 81.5 85.5 108.5 1
AT-SIC-ZC6215CE 75 130 25 1.5 83 90 122 1.5
AT-SIC-ZC6816CE 80 100 10 0.6 84 84.5 96 0.6
AT-SIC-ZC6916CE 80 110 16 1 85 87.5 105 1
AT-SIC-ZC16016CE 80 125 14 0.6 84 / 121 0.6
AT-SIC-ZC6016CE 80 125 22 1.1 86.5 91 118.5 1
AT-SIC-ZC6216CE 80 140 26 2 89 95.5 131 2
AT-SIC-ZC6817CE 85 110 13 1 90 90.5 105 1
AT-SIC-ZC6917CE 85 120 18 1.1 91.5 94.5 113.5 1
AT-SIC-ZC16017CE 85 130 14 0.6 89 / 126 0.6
AT-SIC-ZC6017CE 85 130 22 1.1 91.5 96 123.5 1
AT-SIC-ZC6217CE 85 150 28 2 94 102 141 2
AT-SIC-ZC6818CE 90 115 13 1 95 95.5 110 1
AT-SIC-ZC6918CE 90 125 18 1.1 96.5 98.5 118.5 1
AT-SIC-ZC16018CE 90 140 16 1 95 / 135 1
AT-SIC-ZC6018CE 90 140 24 1.5 98 103 132 1.5
AT-SIC-ZC6819CE 95 120 13 1 100 102 115 1
AT-SIC-ZC6919CE 95 130 18 1.1 101.5 104 123.5 1
AT-SIC-ZC16019CE 95 145 16 1 100 / 140 1
AT-SIC-ZC6019CE 95 145 24 1.5 103 109 137 1.5
AT-SIC-ZC6820CE 100 125 13 1 105 106 120 1
AT-SIC-ZC6920CE 100 140 20 1.1 106.5 111 133.5 1
AT-SIC-ZC16020CE 100 150 16 1 105 / 145 1
AT-SIC-ZC6020CE 100 150 24 1.5 108 113 142 1.5
AT-SIC-ZC6821CE 105 130 13 1 110 111 125 1
AT-SIC-ZC6921CE 105 145 20 1.1 111.5 116 138.5 1
AT-SIC-ZC6822CE 110 140 16 1 115 117 135 1
AT-SIC-ZC6922CE 150 20 1.1 116.5 121 143.5 1
AT-SIC-ZC6824CE 120 150 16 1 125 127 145 1
AT-SIC-ZC6924 120 165 22 1.1
AT-SIC-ZC16024 120 180 19 1
AT-SIC-ZC6024 120 180 28 2
AT-SIC-ZC6224 120 215 40 2.1
AT-SIC-ZC6324 120 260 55 3
AT-SIC-ZC6826 130 165 18 1.1
AT-SIC-ZC6926 130 180 24 1.5
AT-SIC-ZC16026 130 200 22 1.1
AT-SIC-ZC6026 130 200 33 2
AT-SIC-ZC6226 130 230 40 3
AT-SIC-ZC6326 130 280 58 4
AT-SIC-ZC6828 140 175 18 1.1
AT-SIC-ZC6928 140 190 24 1.5
AT-SIC-ZC16028 140 210 22 1.1
AT-SIC-ZC6028 140 210 33 2
AT-SIC-ZC6228 140 250 42 3
AT-SIC-ZC6328 140 300 62 4
AT-SIC-ZC6830 150 190 20 1.1
AT-SIC-ZC6930 150 210 28 2
AT-SIC-ZC16030 150 225 24 1.1
AT-SIC-ZC6030 150 225 35 2.1
AT-SIC-ZC6230 150 270 45 3
AT-SIC-ZC6330 150 320 65 4
AT-SIC-ZC60/22 22 44 12 0.6
AT-SIC-ZC62/22 22 50 14 1
AT-SIC-ZC63/22 22 56 16 1.1
AT-SIC-ZC60/28 28 52 12 0.6
AT-SIC-ZC62/28 28 58 16 1
AT-SIC-ZC63/28 28 68 18 1.1
AT-SIC-ZC60/32 33 58 13 1
AT-SIC-ZC62/32 33 65 17 1
AT-SIC-ZC63/32 33 75 20 1.1
AT-SIC-ZC603CE 3 9 3
AT-SIC-ZC606CE 6 17 6
AT-SIC-ZCMR117 7 11 3
AT-SIC-ZCMR128 8 12 3.5
AT-SIC-ZCMR85 5 8 2.5
AT-SIC-ZCMR63-1 3 6 2.5
AT-SIC-ZCMR85-1 5 8 2
AT-SIC-ZCMR148 8 14 4
AT-SIC-ZCMR84 4 8 2
AT-SIC-ZCMR126 6 12 4
AT-SIC-ZCMR74-1 4 7 2
AT-SIC-ZCMR84-1 4 8 3
AT-SIC-ZCMR74 4 7 2.5
AT-SIC-ZCMR148 8 14 3.5
AT-SIC-ZCMR63 3 6 2
AT-SIC-ZCMR103 3 10 4
AT-SIC-ZCMR104 4 10 4
AT-SIC-ZCMR105 5 10 3
AT-SIC-ZCMR105-1 5 10 4
AT-SIC-ZCMR106 6 10 2.5
AT-SIC-ZCMR106-1 6 10 3
AT-SIC-ZCMR115 5 11 4
AT-SIC-ZCMR52 2 5 2.5
AT-SIC-ZCMR62 2 6 2.5
AT-SIC-ZCMR94 4 9 3
AT-SIC-ZCMR95 5 9 3
AT-SIC-ZCR188 6.35 12.7 4.763
AT-SIC-ZCR6 9.525 22.225 5.556

 

Bearing Types and Dimensional Fields

Two supply routes share the same silicon carbide material family but are specified from different dimensional fields. Use the route that matches the part in your assembly.

Supply route Primary dimensional fields Interface and acceptance fields
SiC sliding bushing or sleeve Bore (ID), outer diameter (OD), length or height, wall thickness, flange or thrust face, steps, grooves and holes Datums, roundness, cylindricity, coaxiality, running clearance with measurement temperature, shaft and housing fit, contact-surface finish
Full ceramic SiC ball bearing d · bore, D · outer diameter, B · width; ring and ball configuration; retaining or cage arrangement Internal clearance, mounting dimensions da / Da / ra, runout, ring and ball specification, fit and duty
Drawing-based adaptation Part drawing with revision, or the existing part and its assembly position Material route, tolerances, surface finish, inspection method and quantity

Download Size Guide

 

Silicon Carbide Material Routes and Properties

ADCERAX works from four silicon carbide manufacturing routes. Two are offered as standard bearing purchase routes; the other two are used for thermal-processing and kiln components and require confirmation of porosity, hot strength and permeability for each ordered part.

Property Unit/condition SSiC (AD-SIC-SS) RBSiC (AD-SIC-RB)
SiC content wt% ≥99 85 nominal
Residual free silicon phase basis No silicon-infiltration phase 15 wt% nominal
Bulk density g/cm³; selection value 3.10 typical ≥3.02
Open porosity vol% <0.1 ≤0.1
Flexural strength MPa; typical 380 (temperature not stated) 250 at 20 °C
Compressive strength MPa; typical ≥2600 Not listed
Young's modulus GPa; typical 420 330 at 20 °C
Poisson's ratio — 0.16 Not listed
Thermal conductivity W/(m·K); typical 100–120 (temperature not stated) Not listed at ambient
Application-temperature ceiling °C; initial selection 1600 1380
Flexural strength at 1200 °C MPa; typical Not listed 280
Young's modulus at 1200 °C GPa; typical Not listed 300
Thermal conductivity at 1200 °C W/(m·K); typical Not listed 45

 

SiC Material Comparison for Bearing Parts

Both standard routes are silicon carbide. The practical difference is phase content, forming route and the surface you can achieve — not a simple better-or-worse ranking.

Material option Structure Typical bearing use Trade-off to accept
SSiC — sintered silicon carbide Dense, ≥99 wt% SiC, no silicon-infiltration phase, open porosity below 0.1 vol% Chemical pumps, precision bearing parts, wear surfaces that need a ground or polished finish Costs more to machine; the forming route limits very large or very complex shapes
RBSiC — reaction-bonded silicon carbide Dense SiC with about 15 wt% residual free silicon, open porosity ≤0.1 vol% Larger or more complex geometries; near-net shapes where forming flexibility matters Residual free silicon must be checked against the medium; strength and stiffness are lower than SSiC
NBSiC / RSiC Porous silicon carbide routes used for thermal-processing components Not offered as a standard bearing route; considered only when porosity and permeability are defined for the part Open porosity changes chemical and wear behavior; values are confirmed per ordered component

ADCERAX can review both material route and bearing geometry before production. The goal is not only to choose a hard ceramic material, but also to match the SiC grade, surface finish, clearance, and installation interface with the real operating condition.

Performance in Corrosive, Abrasive and Thermal Duty

SiC bearings are selected because of what the ceramic does at the contact surface, not because of one headline number. The table shows which property supports which duty, and what has to be confirmed before that property becomes a bearing decision.

Duty Property that supports it What must be confirmed
Corrosive media
Chemical pumps, process-fluid circulation, acid and chloride service		 Chemical stability of the SiC route; SSiC contains ≥99 wt% SiC with no silicon-infiltration phase Media, concentration, pH and temperature against the actual route; RBSiC contains about 15 wt% residual free silicon, which must be checked in the same media
Abrasive and particle-loaded service
Slurry pumps, sump pumps, powder handling		 High hardness of the SiC surface relative to metal; dense SSiC with open porosity below 0.1 vol% Particle size distribution, hardness and concentration; flushing path; the wear or clearance change that defines the end of life
Thermal motion
Furnace drives, thermal-processing machinery		 Application-temperature ceiling: 1600 °C for SSiC, 1380 °C for RBSiC as initial selection values; RBSiC retains 280 MPa flexural strength at 1200 °C Atmosphere, heating and cooling rate, load direction, mating material and the thermal-fit clearance in the assembly
Heat removal at the contact Thermal conductivity of 100–120 W/(m·K) for SSiC (temperature not stated); 45 W/(m·K) for RBSiC at 1200 °C Whether frictional heat is carried away by the medium, by flushing or by the housing; the measured temperature at the bearing, not a material ceiling
Dimensional stability under load Young’s modulus of 420 GPa for SSiC and 330 GPa for RBSiC at 20 °C Radial and axial load, shaft deflection, support length and the geometry that actually carries the load

Packaging for Silicon Carbide Bearings

  • Surface protection: Protective wrapping, with additional protection for ground or polished contact surfaces as specified.
  • Separate cushioning: Individual cushioning keeps ceramic parts separated during transport.
  • Packing requirements: Confirm inner cartons, outer packaging, identification and any special requirements with the order.

ADCERAX® Packaging of Silicon Carbide Bearing

Where Silicon Carbide Bearings Are Used

SiC bearings are considered where metal bearings are limited by corrosion, abrasion, heat or lubricant restriction.

  • Chemical and process-fluid pumps. The typical duty is journal support for the shaft in acid, alkali, chloride or oxidizing media, with flooded or flushed running. Before ordering, confirm fluid chemistry and concentration, pH, temperature, shaft and housing materials, lubrication or flush flow, and load and speed.
  • Slurry, sump and particle-loaded service. Bearing surfaces are exposed to mineral solids, suspended fines or abrasive process media. Confirm particle size distribution, hardness and concentration, the flush path, and the clearance or wear change that defines end of life.
  • Furnace drives and thermal-motion assemblies. These are motion parts in thermal-processing equipment where metal softens, oxidizes or loses dimensional stability. Confirm atmosphere, heating and cooling rate, thermal cycle, mating material, load direction, and bearing temperature.
  • Clean-process and low-lubrication equipment. These are assemblies where oil or grease contamination is not acceptable and lubrication must be restricted. Confirm the contamination limit, load and speed, running duration, friction and heat generation, and the agreed wear or friction criteria.

ADCERAX Silicon Carbide Bearing Use and Handling Guide

Before installation, confirm that the shaft, housing, process medium, temperature range and load direction match the bearing design.

  • Operating Conditions

    1. Chemical compatibility: Confirm that the bearing and mating materials suit the process medium and its concentration.
    2. Temperature changes: Follow the approved heating and cooling rates. Different expansion rates can change assembly clearance.
    3. Slurry exposure: Monitor solids concentration and particle buildup around the contact surfaces.

  • Installation

    1. Prepare the mating parts: Clean and deburr the shaft and housing. Check alignment before fitting.
    2. Control installation force: Follow the specified fit and assembly method. Apply force evenly without impact or excessive pressure.
    3. Check orientation: Position the bearing correctly for the intended axial or radial load.

  • Maintenance

    1. Monitor vibration: Investigate changes that may indicate wear, misalignment or particle accumulation.
    2. Keep contact areas clean: Remove debris and deposits using a cleaning method compatible with the assembly.
    3. Check lubrication and flushing: Where used, keep the lubricant or flushing medium clean and compatible with the operating conditions.

  • Storage and Handling

    1. Keep packaging closed: Protect bearings from moisture, dust and contamination until installation.
    2. Store away from heat: Avoid heat sources and rapid temperature changes.
    3. Protect ceramic surfaces: Use padded supports and clean gloves. Avoid dropping, striking or stacking bearings against hard parts.

Silicon Carbide Bearing FAQs

  1. Q1: What applications are silicon carbide bearings used for?Silicon carbide bearings are commonly used in chemical pumps, slurry pumps, sump pumps, furnace drive assemblies, powder-handling equipment, and dry-running machinery. They are selected when corrosion, abrasive particles, high temperature, or lubricant contamination may reduce the reliability of metal bearings.
  2. Q2: When should I choose silicon carbide instead of silicon nitride or zirconia?Silicon carbide is usually preferred when corrosion resistance, high hardness, thermal conductivity, and abrasive wear resistance are key requirements. Silicon nitride may be considered for high-speed rolling elements, while zirconia may be selected when toughness and impact behavior are more important. The final choice should depend on load, speed, media, temperature, and mating material.
  3. Q3: Can silicon carbide bearings run without lubrication?Silicon carbide can support selected dry-running or low-lubrication conditions, but the design must be reviewed carefully. Load, speed, heat generation, shaft material, surface finish, and operating atmosphere all affect dry-running performance. For critical systems, ADCERAX recommends confirming the full working condition before material selection.
  4. Q4: What information is needed for a custom SiC bearing quotation?A drawing or sample is preferred. Buyers should provide inner diameter, outer diameter, width, tolerance, bearing type, shaft material, operating temperature, process media, load direction, speed, lubrication condition, quantity, and inspection requirements. These details help ADCERAX review manufacturability and material suitability.
  5. Q5: How do I choose between SSiC and RBSiC bearing materials?SSiC is often selected for stronger corrosion resistance and demanding wear environments, while RBSiC can be suitable for larger or more complex bearing geometries. The decision should be based on chemical exposure, temperature, mechanical load, size, machining requirements, and cost target.
  6. Q6: What affects the service life of a silicon carbide bearing?Service life is affected by material grade, surface finish, shaft alignment, clearance, load, speed, temperature cycling, process fluid, abrasive particle content, and installation accuracy. A SiC bearing is easier to specify correctly when the ceramic surface, mating material, and operating condition are reviewed as one complete system.
  7. Q7: Can ADCERAX manufacture silicon carbide bearings from drawings or samples?Yes. ADCERAX can review custom silicon carbide bearing requirements based on drawings, samples, or equipment interface details. The review can include material selection, dimensions, surface finish, tolerance, application environment, and packaging requirements before quotation.
  8. Q8: How should running clearance and mounting fit be specified for a sliding bearing?Identify the mating journal and bushing or sleeve surfaces, and state the running clearance with its measurement temperature. Provide operating temperatures and mating materials for the thermal-fit review. Define the shaft or housing mounting fit separately on the drawing.
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Silicon carbide bearing customization diagrams showing ball bearing and bushing dimensions, grooves, radial holes, mounting fits and running clearance.

Custom Silicon Carbide Bearing Components

ADCERAX supplies SiC bearing components from drawings, samples or equipment interface details.

1. Dimensions and Geometry

  • Bore, outer diameter, length, height and wall thickness.
  • Flanges, thrust faces, steps, grooves and holes.
  • Chamfers and edge details.
  • For ball bearing designs: ring geometry, ball size and count, cage arrangement and raceway profile.

2. Material and Surface Finish

  • Material: SSiC or RBSiC, reviewed against the medium and operating conditions.
  • Working surfaces: Ground or polished to the drawing requirements.
  • Surface zones: Define contact faces, mounting faces and edge conditions separately.

3. Fits and Inspection

  • Shaft and housing fits, plus running clearance at the specified measurement temperature.
  • Datums, coaxiality, runout and contact alignment.
  • Inspection methods, sampling and acceptance requirements.
View Our Custom Capabilities
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Silicon carbide mechanical seal ring for pump and chemical fluid service

Custom Silicon Carbide Mechanical Seal Rings for Pumps and Harsh Fluids

SiC lined external gear pump for chemical metering and corrosive process fluids

SiC Lined Internal Gear Pump for Abrasive, Viscous and Corrosive Fluids

SiC-lined external gear pump with visible shaft and port

Custom SiC-Lined External Gear Pumps

Custom silicon carbide plates for sintering setters and furnace fixtures

Custom Silicon Carbide Plates for Sintering and Furnace Fixtures

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ADCERAX - Your Trusted Advanced Ceramics Manufacturing Partner

ADCERAX – Custom Ceramic Supply and Engineering Coordination
ADCERAX coordinates drawing review, production and inspection with manufacturing partners against agreed specifications.

China-Based Ceramic Supply Partner

ADCERAX coordinates custom ceramic supply for overseas OEMs, equipment builders, and labs.

Custom Drawing Support

We review drawings, dimensions, materials, and application conditions before quotation.

Ceramic Process Control

Forming, sintering, machining, grinding, and finishing are arranged by part requirements.

Pre-Shipment Inspection

Dimensional checks, visual inspection, and packaging review help reduce procurement risk.

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Partner with ADCERAX for reliable, high-performance advanced ceramic solutions. Our engineers are ready to discuss your project.

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info@adcerax.com

Phone

Tel: +86-0731-84428843 WhatsApp: +86 19311583352

Response Time

Within 24 hours

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