PowerTrac 2250 - 0500 XPR RA, with SSN Ball Nut, Preloaded, Flanged

Inch Ball Screw AssemblyPrecision Rolled Inch Ball Screw, XPR, 2.250" Ball Circle Diameter, 0.500" Lead, RH Thread, Inch Ball Nut, for SGT and XPR, Ground Accuracy, Preloaded, Fixed, SSN,Flanged

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.

To configure a part number, download 2D/3D models, or request a quote, please select the "Quote or Download" tab and click the "Configure" button. (Step 4 of 4)

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Product PowerTrac 2250 - 0500 XPR RA, with SSN Ball Nut, Preloaded, Flanged
Inch Ball Screw
(Screw) Product Info
Screw Code 2250-0500 XPR RA
Precision XPR
Screw Material 4150
Thread Direction RH
(Screw) Details
Ball Circle Diameter [in] 2.250
Lead [in] 0.500
Root Diameter [in] 1.850
End Code for Types 1,2,3,5 [* Journals may show tracings of the thread] 45
End Code for Type 4 [* Journals may show tracings of the thread] 28
(Screw) Performance Specifications
Lead Accuracy +/- [in./ft.] 0.0010
(Screw) Part Numbers
2 ft. Part Number
4 ft. Part Number
6 ft. Part Number XPR22550R72
8 ft. Part Number
12 ft. Part Number XPR22550R144
16 ft. Part Number
20 ft. Part Number
(Screw) Weight
Screw Weight [lb./ft.] 10.80
Inch Ball Nut, for SGT and XPR, Ground Accuracy, Preloaded, Fixed, SSN
(Nut) Product Info
Ball Nut Number SSN0402
Thread Direction RH
(Nut) Details
Ball Circle Diameter [in] 2.250
Lead [in] 0.500
Nominal Ball Diameter [in] 0.375
Root diameter [in] 1.850
(Nut) Forces and Torques
Torque to Raise 1 lb. [in-lb] 0.088
(Nut) Flange Part Numbers
Flange Part Number INTEGRAL
(Nut) Wiper Part Numbers
Wiper Kit Part Number ELASTOMER
(Nut) Weight
Nut Weight [lb] 15.20
(Nut) Performance Specifications
Maximum Adjustable Preload [lb]
Spring Rate x 106 [lb./in.] 7.25
Dynamic Load [lb] 20106
Static Load [lb] 105325

To continue, please configure your item below.

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End Bearing Support - Universal Single Bearing Support

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End Bearing Support - High Capacity Fixed Support

End Machining - Type 1 - Short Journal Typically Used With Single Bearing or Single Bearing EZZE-Mount

End Machining - Type 2 - Medium Journal Typically Used With Duplexed Bearings

End Machining - Type 3 - Long Journal Typically Used With Multiple Sets of Bearings or Double Bearing EZZE-Mount

End Machining - Type 4 - Shaft Journal With No Locknut Thread

End Machining - Type 5 - Heavy Duty Journal Typically Used With High Capacity Fixed Support

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