S71914ACB/HCP4ADGA Super-precision Angular Contact Ball Bearings, 25° Contact Angle, High-speed B Design

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S71914ACB/HCP4ADGA

Bore Diameter:70 mm

Outside Diameter:100 mm

Width:32 mm

Weight:0.66 kg

Min. Order:1 Piece

The S71914ACB/HCP4ADGA Ultra-precision angular contact ceramic ball bearings are widely used in high-speed, high-precision applications and situations where there is a risk of shaft current, such as: high-speed machining center spindles, high-speed electric spindles, grinding machine spindles, lathe spindles, ball screw support mechanisms, and medical equipment (high-speed dental drills).

The S71914ACB/HCP4ADGA bearing is a super-precision angular contact ball bearings with an inner diameter of 70 mm , an outer diameter of 100 mm, a width of 32 mm. It typically uses P4A grade precision tolerances and Carbon chromium steel rings, HC = Balls made of bearing grade silicon nitride Si3N4 (hybrid bearing) rolling mlement. Its dynamic radial rated load is approximately 21016 N, its static radial rated load is approximately 23408 N. S = Seal on both sides type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

70 mm

Outside Diameter:

100 mm

Thickness:

32 mm

Weight:

0.66 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

21016 N

Static load Capacity, Radial (Cor):

23408 N

Reference speed (Grease rpm):

18920

Limiting speed (Oil rpm):

29956

Specifications:

Structure:

Angular Contact

Number of Rows:

Precision Rating:

P4A

Bearing Material:

Carbon chromium steel

Cage Type:

Cotton fabric reinforced phenolic resin or carbon fibre reinforced PEEK, outer ring centred

Seals Type:

S = Seal on both sides

Number of Balls:

Rolling Mlement Material:

HC = Balls made of bearing grade silicon nitride Si3N4 (hybrid bearing)

Bore Type:

Z = Cylindrical Bore

Operating Temperature:

-30 to +110 °C

System of Measurement:

Metric

Series:

S719..-ACB/HCP4A

Rolling Element:

balls

Transaction Information:

Transport Package:

Standard Export Package

Service:

7*24 hour

Shipping Ways:

by Sea or Air

Country of Origin:

china

Stock:

100 Piece

Port:

Tianjin, Shanghai, Shenzhen, Guangzhou or Qingdao

Payment term:

by T/T in advance

Delivery time:

2-3 days for stock, 25-30 days for bulk production

Detailed description

S71914ACB/HCP4ADGA bearings ( 70 mm x 100 mm x 32 mm) have the advantages of ceramic balls materials, high speed, ultra-high precision and high thermal stability, corrosion resistant, non-magnetic, and are therefore widely used in the Machine tool spindles, high-speed electric spindles, precision instruments, aerospace and semiconductor equipment.

Part Number	S71914ACB/HCP4ADGA
Bearing Type	super-precision angular contact ball bearings
Internal design	ACB = 25° contact angle, high-speed B design
Series	S719..-ACB/HCP4A
Weight [kg]	0.66
Units	Metric
Contact type	2-point contact
Accuracy class	P4A
Rows NO.	2
Cage	Cotton fabric reinforced phenolic resin or carbon fibre reinforced PEEK, outer ring centred
Dimension series	ISO dimension series 19
Contact angle - α	25 °
Manufacturer Part Code	S71914 ACB/HCP4ADGA
Bore Type	Z = Cylindrical Bore
Ring material	Carbon chromium steel
Ball material	HC = Balls made of bearing grade silicon nitride Si3N4 (hybrid bearing)
Balls qty（single row）	32
Temperature - T(min) [°C]	-30
Temperature - T(max) [°C]	+110
Bearing set arrangement and preload	DGA = Set of two bearings for universal matching, Extra light preload
Ring type	inner rings(1 piece), outer rings(1 piece)
Load Direction	Angular Contact
Seal type	S = Seal on both sides
Grease quantity - G_ref [cm³]	4.5
Dimension
d φ Inside [inch]	2.756
D Φ Outside [inch]	3.937
B Width [inch]	1.260
r₁,r₂(min.) Chamfer [inch]	0.039
r₃,r₄(min.) Chamfer [inch]	0.012
r_a(max.) Fillet [inch]	0.039
r_b(max.) Fillet [inch]	0.012
d₁ [inch]	3.185
d₂ [inch]	3.134
D₁ [inch]	3.610
D₂ [inch]	3.610
Balls diameter [inch]	0.250
Performance (Load Capacity and speeds)
C_r Dynamic Radial [lbf]	4724
C_0r Static Radial [lbf]	5262
P_u Fatigue Radial [lbf]	156
Attainable speeds (Grease) [r/min]	18920
Attainable speeds (Oil-air) [r/min]	29956
Abutment dimensions
d_a(min.) [inch]	2.937
d_b(min.) [inch]	2.937
D_a(max.) [inch]	3.756
D_b(max.) [inch]	3.858
d_n [inch]	3.224

The S71914ACB/HCP4ADGA Ultra-precision angular contact ceramic ball bearings are primarily composed of high-precision bearing steel inner and outer rings, silicon nitride ceramic balls, and a cage. The cage is available in ball-guided polyamide (silent series) or brass. Contact angles are available in various specifications, including 15°, 25°, and 40°, with precision grades reaching P4 and above.

Ultra-precision angular contact ceramic ball bearings feature low-density ceramic balls, resulting in low centrifugal force, significantly improved limiting speed, and lower heat generation. The electrical insulation properties of the ceramic material effectively prevent electrolytic corrosion, extending bearing life. The silent series uses ball-guided polyamide cages to reduce vibration and noise, and optimized tolerances ensure more uniform load distribution and superior radial stiffness in bearing groups.

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High quality S71914ACB/HCP4ADGA ( 0.66 kg Mass, ID: 70 mm OD: 100 mm WD: 32 mm , S719..-ACB/HCP4A Series , 2 Rows , P4A Accuracy Class , Carbon chromium steel Material , 21016 Radial dynamic , 23408 Radial static ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. S71914ACB/HCP4ADGA. then click the button " Send " The web site will make your purchasing information sent to the supplier's mailbox, who will come to contact you upon they get your information at the first time.

S71914ACB/HCP4ADGA Super-precision Angular Contact Ball Bearings, 25° Contact Angle, High-speed B Design

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