Process for mineral processing and processing of glass siliceous raw materials

1. Sandstone crushing process Sandstone crushing process currently has the following main types:
(1) Direct pulverization process. The process flow is: raw ore → strip sieve → 破碎 type crushing → sieving → cone crushing → sieving → multi-stage roll crushing → screening → product.
(2) Calcination and pulverization process. The process flow is: raw ore → bottle kiln calcination → water cooling → coarse crushing → medium crushing → cage grinding → screening → product.
(3) Self-grinding and pulverizing process. The process flow is: raw ore → strip sieve → self-grinding machine → air grading system → qualified product and ultra-fine powder (over-granular grade → cage-shaped mill → hexagonal sieve → final product).
(4) Wet rod grinding magnetic separation process. This is a new process successfully researched and promoted during the “Seventh Five-Year Plan” period in China. The process flow is: raw ore → coarse crushing → medium crushing → screening → rod grinding → high frequency fine screening → hydraulic classification → magnetic separation and iron removal → product .
2. Natural silica sand beneficiation process
(1) Rub the sludge process. The general process flow is: raw sand→mixing scrubbing→de-sludge de-sludge→hydraulic grading (or wet sieving)→product.
(2) Flotation process. The process flow is: raw sand→mixing scrubbing→de-sludge→flotation→product.

Deep Groove Ball Bearing is the most common type among ball bearings.The basic structure of deep groove Ball Bearing include an outer ring,an inner ring, a group of steel ball and a set of cage. Deep groove ball bearing has two types: single row and double rows bearings. 6900-2RS bearing is made of Chrome Steel, 6900-2RS bearing is closed with rubber seals to protect the bearing from dust or any possible contamination, 6900-2RS bearing is self lubricated bearing,6900-2RS bearing is already greased.


Model Number

6900 Series
Brand Name NMN OR OEM
Type Ball Bearing                                                                                           
 Structure Deep Groove
Number of Row Single Row
Seals Type OPEN ZZ 2RS
Precision Rating P0 P6 P5 P4
Specification 6900 To 6910
Steel Ball Amount 9-14. Depend on the ball size                                                                

Chamfer

0.3-0.6mm

Application

Machine & Rolling Mill

Certification

ISO9001:2008
ODM and OEM To order
MOQ 1 sample. Please contact with us for the lastest MOQ
Payment Terms L/C, T/T, Western Untion, PayPal, Bank, etc.
Packing Depend on the items. We also can packing it as your request

Bearing number Bore O.D Width Chamfer Load Rating Ball complement Maximum Seed Kg/pc
mm mm mm mm Dynamic Static No. Size Grease Oil
6900 10 22 6 0.5 2.7 1.27 12 2.381 2500 32000 0.009
6901 12 24 6 0.5 2.89 1.46 9 3.5 20000 28000 0.011
6902 15 28 6 0.5 4.1 2.06 10 3.969 19000 26000 0.016
6903 17 30 7 0.5 4.65 2.58 11 3.969 18000 24000 0.018
6904 20 37 7 0.5 6.4 3.7 11 4.763 17000 22000 0.036
6905 25 42 9 0.5 7.05 4.56 13 4.763 14000 18000 0.042
6906 30 47 9 0.6 7.25 5 14 4.763 12000 16000 0.148
6907 35 55 10 0.6 11.2 7.45 14 5.556 10000 14000 0.074
6908 40 62 12 0.6 14.5 10.2 14 6.747 8000 12000 0.11
6909 45 68 12 0.6 15.1 11.2 15 6.747 6000 10000 0.128
6910 50 72 12 0.6 15.6 12.2 16 6.747 4000 8000 0.132
Product Photo:

Bearing 6805

Bearing 6805 ZZ

6805

Packing:

1 Industry package: 200pcs/plastic bag, 2000pcs /carbon , 50 cartons/pallet , 
2 Tube Package: 10PCS/tube,then put in Carton and Pallet 
3 Single Package: 1PC/single box, then put in Carton and Pallet 
And also we can pack according to your requirement.

Packing Photo:

Thin-wall bearing 6900

Workshop:

Thin-wall bearing

Shippment:

Thin-wall bearing 6900 series

Exhibition:

Deep Groove Ball Bearing 6900



6900 Series Deep Groove Ball Bearing

6900 Series Deep Groove Ball Bearing,6900 Thin-Wall Ball Bearing,Thin-Wall Bearing 6900

Hebei Naimei Bearing Co., Ltd. , https://www.nmn-bearing.com

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