Polyamide Cage TAC50-3T85SUMPN5D Angular Contact Super Precision Bearings For Ball Screw Support

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TAC50-3T85SUMPN5D

Bore Diameter:50 mm

Outside Diameter:130 mm

Width:31 mm

Weight:2.00 kg

Min. Order:1 Piece

The TAC50-3T85SUMPN5D Ball screw support bearings are widely used in the feed drive systems of CNC machine tools, specifically including: machining centers (X/Y/Z axis screw support), CNC lathes (Z-axis), EDM machines, precision grinding machines, industrial robots (linear modules), and semiconductor equipment (wafer positioning platforms).

The TAC50-3T85SUMPN5D bearing is a Angular Contact Super Precision Thrust Ball Bearings, TAC 03 Series for Ball Screw Support (High-Load Drive) with an inner diameter of 50 mm , an outer diameter of 130 mm, a width of 31 mm. It typically uses PN5D = Standard accuracy (ISO Class 5) grade precision tolerances and GCr15SiMn rings, GCr15SiMn rolling mlement. Open type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

50 mm

Outside Diameter:

130 mm

Thickness:

31 mm

Weight:

2.00 KG

Reference speed (Grease rpm):

3077

Limiting speed (Oil rpm):

3888

Specifications:

Structure:

Ball Screw Support Bearings

Number of Rows:

One

Precision Rating:

PN5D = Standard accuracy (ISO Class 5)

Bearing Material:

GCr15SiMn

Cage Type:

T85 = Polyamide cage

Seals Type:

Open

Rolling Mlement Material:

GCr15SiMn

Bore Type:

Cylindrical

System of Measurement:

Metric

Series:

TAC 03 Series (TAC..-3T85SUMPN5D)

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:

200 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

TAC50-3T85SUMPN5D bearings ( 50 mm x 130 mm x 31 mm) have the advantages of High axial stiffness and load-bearing capacity, 60° contact angle design, pre-installed and pre-loaded for easy installation, optional sealing for maintenance-free operation, and are therefore widely used in the Machine tool ball screws, machining centers, automated equipment, robots, precision measuring devices.

Part Number	TAC50-3T85SUMPN5D
Bearing Type	Angular Contact Super Precision Thrust Ball Bearings, TAC 03 Series for Ball Screw Support (High-Load Drive)
Internal design	D = Contact angle 55 °
Contact angle - α	55 °
Type	TAC
Dimension series	03 = 03 Series
Preload	M = Medium preload
Arrangement row	One
Arrangement	SU = Universal (One-row)
SU Bearing Mass - m [lb]	4.4092
DB/DF Arrangement H preload [lbf]	1165
DB/DF Arrangement H Axial Rigidity	1077 N/µm
DB/DF Arrangement H Starting Torque	0.78 N･m
DB/DF Arrangement H Measured Axial Clearance	-26 µm
Speed ratings (grease) - n_B	3077 min^–1
Speed ratings (oil) - n_G	3888 min^–1
Recommended Grease Quantities - CC	40 g/brg
Dimension
d φ Inside [inch]	1.9685
D Φ Outside [inch]	5.1181
B Width [inch]	1.2205
r min Chamfer [inch]	0.0827
r₁ min Chamfer [inch]	0.0433
d₁ Shoulder [inch]	2.9094
d₂ Shoulder [inch]	3.6929
D₁ Shoulder/Recess [inch]	3.8583
D₂ Shoulder/Recess [inch]	4.6850
Dynamic Axial Capacity
C_a 1 row [lbf]	48919
C_a 2 row [lbf]	79742
C_a 3 row [lbf]	105621
C_a 4 row [lbf]	129219
C_a 5 row [lbf]	150532
Static Axial Capacity
C_0a 1 row [lbf]	54325
C_0a 2 row [lbf]	108947
C_0a 3 row [lbf]	162893
C_0a 4 row [lbf]	216858
C_0a 5 row [lbf]	271972
Other Arrangement	1 rows: DB(<>): TAC50-3T85DBMPN5D DF(><): TAC50-3T85DFMPN5D 2 rows: DT(<<): TAC50-3T85DTMPN5D DFD(><<): TAC50-3T85DFDMPN5D DFF(>><<): TAC50-3T85DFFMPN5D DBD(<<>): TAC50-3T85DBDMPN5D DBB(<<>>): TAC50-3T85DBBMPN5D 3 rows: DFT(><<<): TAC50-3T85DFTMPN5D DFFD(>><<): TAC50-3T85DFFDMPN5D DFFF(>>><<<): TAC50-3T85DFFFMPN5D DBT(<<<>): TAC50-3T85DBTMPN5D DBBD(<<<>>): TAC50-3T85DBBDMPN5D DBBB(<<<>>>): TAC50-3T85DBBBMPN5D 4 rows: DFTD(><<<<): TAC50-3T85DFTDMPN5D DFFT(>><<<<): TAC50-3T85DFFTMPN5D DBTD(<<<<>): TAC50-3T85DBTDMPN5D DBBT(<<<<>>): TAC50-3T85DBBTMPN5D 5 rows: DFTT(><<<<<): TAC50-3T85DFTTMPN5D DBTT(<<<<<>)TAC50-3T85DBTTMPN5D

The TAC50-3T85SUMPN5D Ball screw support bearings are typically composed of high-precision angular contact ball bearings paired back-to-back (DB) or in series (DT) configurations. They feature a small contact angle (15° or 20°) and high-rigidity cages (phenolic resin or brass) on both inner and outer rings, achieving a precision grade of P4 or higher. Some models integrate seals and lubrication holes, forming a preload unit.

Ball screw support bearings offer extremely high axial rigidity and load-bearing capacity, accurately withstanding bidirectional axial loads in screw drives. The back-to-back configuration provides anti-overturning moment capability, ensuring positioning accuracy. The preload design eliminates axial backlash, achieving backlash-free, low-friction operation with low heat generation, making them suitable for high-speed feed. They are factory-installed and ready to use, simplifying installation and adjustment.

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High quality TAC50-3T85SUMPN5D ( 2.00 kg Mass, ID: 50 mm OD: 130 mm WD: 31 mm , TAC 03 Series (TAC..-3T85SUMPN5D) Series , One Rows , PN5D = Standard accuracy (ISO Class 5) Accuracy Class , GCr15SiMn Material ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. TAC50-3T85SUMPN5D. 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.

Polyamide Cage TAC50-3T85SUMPN5D Angular Contact Super Precision Bearings For Ball Screw Support

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