Skip to Content

PowerTrac 0631 - 0200 XPR RA, with SSN Ball Nut, Internal Return, Preloaded, Flanged

Inch Ball Screw AssemblyPrecision Rolled Inch Ball Screw, XPR, 0.631" Ball Circle Diameter, 0.200" Lead, RH Thread, Inch Ball Nut, for SGT and XPR, Ground Accuracy, Preloaded, Fixed, SSN, Flanged, Internal Read More
Product Specifications

Configure

Product Specifications

Download Spec Sheet
Specifications Diagram

Inch Ball Screw

(Screw)Product Info

Screw Code:
0631-0200 XPR RA
Precision:
XPR
Screw Material:
4150
Thread Direction:
RH

(Screw)Details

Ball Circle Diameter [in]:
0.631
Lead [in]:
0.200
Root Diameter [in]:
0.500
End Code for Types 1,2,3,5 [* Journals may show tracings of the thread]:
12
End Code for Type 4 [* Journals may show tracings of the thread]:
8

(Screw)Performance Specifications

Lead Accuracy +/- [in./ft.]:
0.0010

(Screw)Part Numbers

2 ft. Part Number:
4 ft. Part Number:
XPR6320R48
6 ft. Part Number:
XPR6320R72
8 ft. Part Number:
12 ft. Part Number:
16 ft. Part Number:
20 ft. Part Number:

(Screw)Weight

Screw Weight [lb./ft.]:
0.86

Inch Ball Nut, for SGT and XPR, Ground Accuracy, Preloaded, Fixed, SSN

(Nut)Product Info

Ball Nut Number:
SSN10304
Thread Direction:
RH

(Nut)Details

Ball Circle Diameter [in]:
0.631
Lead [in]:
0.200
Nominal Ball Diameter [in]:
0.125
Root diameter [in]:
0.500

(Nut)Forces and Torques

Torque to Raise 1 lb. [in-lb]:
0.035

(Nut)Flange Part Numbers

Flange Part Number:
INTEGRAL

(Nut)Wiper Part Numbers

Wiper Kit Part Number:
ELASTOMER

(Nut)Weight

Nut Weight [lb]:
0.45

(Nut)Performance Specifications

Maximum Adjustable Preload [lb]:
Spring Rate x 106 [lb./in.]:
1.50
Dynamic Load [lb]:
450
Static Load [lb]:
2115

More Details

To obtain optimum performance of Nook precision ball screws, it is required that the ball screws machined in their case hardened state. When annealing is applied to the end of the ball screw for machining purposes, the lead accuracy is distorted causing the ball nut to lock or jam on the ball screw.

Nook precision ball screw and nut assemblies provide ease of application without the need to machine or anneal the ball screw, as all that is required is installation. Nook precision assemblies offer turnkey solutions that only require a power source (hand operation or motor). All of the elements are available for quick delivery from shelf stock.

When loading an SSN or PRN style ball nuts on an XPR ball screw, depending on the length of the ball screw, the preload condition may vary. The fit between the ball nut and ball screw will range from a slight clearance (~.0005") to no-lash clearance throughout the travel, which may cause a minimal variation in tare drag torque. If a full preload is required select an SGT ground ball screw instead.