Jewel bearings

Our factory manufactures exact jewel bearings of great quantity and high quality, such as synthetic white corundumn bearings, ruby bearings, sapphire bearings, glass, microcrystalline glass, cubic zirconia, natural agate bearing, etc, Jewel bearings have application in apparatus, meter and ball bearing, etc. May customize products.

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Product introduction
supporting bearings ( Performance area)

Type of precious stone bearings: synthetic white corundum, synthetic sapphire and ruby bearings, crystallite glass, cube zirconia, nature agate bearings and etc. We can produce customized jewel bearings according to specific requirements and drawings from clients. It's chiefly applied as supporting bearings to the rotational systems of various accurate chronographs, auto-memorizing apparatus, precise instruments (micrometer, dial indicator) and other apparatus.


Sapphire-Ruby-bearing1.jpg

Sapphire & Ruby bearing


Sapphire-Ruby-bearing2.jpg

Sapphire & Ruby bearing


Natural-agate-bearing.jpg

Natural agate bearing


Microcrystalline-glass-bearing.jpg

Microcrystalline glass bearing



Flat jewels 1 ( Unpolished )

Flat-jewels.gif

Size & Tolerance of Products

Size(mm)Tolerance(mm)
D1.00--30.00±0.01
H0.20--15.00±0.01
R0.10--0.15±0.05


Flat jewels 2 ( Single-face polished )

Flat-jewels.gif

Size & Tolerance of Products

Size(mm)Tolerance(mm)
D1.00--30.00±0.01
H0.20--15.00±0.02
R0.10--0.15±0.05


Flat jewels 3 ( Double-face polished )

Flat-jewels.gif

Size & Tolerance of Products

Size(mm)Tolerance(mm)
D1.00--30.00±0.01
H0.20--15.00±0.02
R0.10--0.15±0.05


Jewel balls 1 ( Unpolished )

Flat-jewels.gif

Size & Tolerance of Products

Size(mm)Tolerance(mm)
D0.80--2.50±0.005
D2.50--5.00±0.01
D5.00--15.00±0.01


Jewel balls 2 ( Polished )

Flat-jewels.gif

Size & Tolerance of Products

Size(mm)Tolerance(mm)
D0.80--2.50±0.005
D2.50--5.00±0.01
D5.00--15.00±0.01


Jewel cylinders 1 ( Unpolished )

Flat-jewels.gif

Size & Tolerance of Products

Size(mm)Tolerance(mm)
D0.70--15.00±0.01
L0.20--80.00±0.05
R0.10--0.15±0.05


Jewel cylinders 2 ( Side polished )

Flat-jewels.gif

Size & Tolerance of Products

Size(mm)Tolerance(mm)
D0.70--15.00±0.01
L0.20--80.00±0.05
R0.10--0.15±0.05


Ring jewel

Flat-jewels.gif

Size & Tolerance of Products

Size(mm)Tolerance(mm)
D1.00--10.00±0.01
H0.20--8.00±0.02
R0.10--0.15±0.05
d0.15--5.00+0.02
r0.05+0.05


Hole - Vee jewel

Flat-jewels.gif

Size & Tolerance of Products

Size(mm)Tolerance(mm)
D1.20--6.00±0.01
H1.00--4.00±0.02
R0.10--0.15±0.05
h0.15--0.55±0.05
a80°±5°
d0.15--1.00+0.02


Hole - Cup jewel

Flat-jewels.gif

Size & Tolerance of Products

Size(mm)Tolerance(mm)
D1.20--6.00±0.01
H1.00--4.00±0.02
R0.10--0.15±0.05
h0.15--0.55±0.05
d0.15--2.00+0.02
SR0.60--5.00±0.05


Vee jewel

Vee-jewel.gif

Size & Tolerance of Products

Size(mm)Tolerance(mm)
D1.20--6.00±0.01
H1.00--4.00±0.02
R0.10--0.15±0.05
h0.20--0.60±0.05
a80°±5°
SR0.04--0.20±0.02


Cup jewel

Vee-jewel.gif

Size & Tolerance of Products

Size(mm)Tolerance(mm)
D1.20--6.00±0.01
H1.00--4.00±0.02
R0.10--0.15±0.05
h0.20--0.60±0.05
SR0.60--5.00±0.05


Wide variety of micro magnet