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PowerAC Trapezoidal Assembly 904 RA w/Bronze Nut

Trapezoidal Lead Screw Assembly, Tr 26 x 6, 4140, RH, Bronze Nut Read More
Product Specifications

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Product Specifications

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Specifications Diagram

Trapezoidal Lead Screw

(Screw)Product Info

Screw Code:
904 RA
Screw Material:
4140 Series
Thread Direction:
RH

(Screw)Details

Diameter:
26
Lead:
6
Starts:
1
Pitch [mm]:
6
Lead Accuracy +/- [μm/25mm]:
6.25
Thread Code:
904
End Code for Types 1,2,3,5 [* Journals may show tracings of the thread]:
17
End Code for Type 4 [* Journals may show tracings of the thread]:
10

(Screw)Dimensions

A - Root Diameter Mmmimum [mm]:
17.84
D - Nominal Rod Diameter:
26

(Screw)Part Numbers

1800 mm Part Number:
15904
3600 mm Part Number:
16904
900 mm Part Number:
14904

(Screw)Weight

Weight Per Meter [kg]:
3.2

Trapezoidal Lead Nut

(Nut)Product Info

Part Number:
20904
Thread Direction:
RH
Type:
Bronze

(Nut)Details

Diameter:
26
Lead [mm]:
6
Starts:
1
Pitch [mm]:
6
Lash (Maximum Axial in) [mm]:
0.30
Nominal Rod Diameter:
26
Thread Code:
904

(Nut)Dimensions

B [mm]:
45.0
C [mm]:
45.0
E [mm]:
15.00
F (n) Dia. [mm]:
(4) 7.00
F BCD [mm]:
70.00
G [mm]:
16.0
H [mm]:
85.0
J [mm]:
M40x15

(Nut)Forces and Torques

Torque to Raise 1 kN [Nm]:
2.469

(Nut)Flange Part Numbers

Flange Part Number:
72004

(Nut)Weight

Flange Weight [kg]:
0.54
Nut Weight [g]:
440

(Nut)Performance Specifications

Efficiency [%]:
39
Lead Accuracy +/- [μm/25mm]:
6.25
Dynamic Load Capacity [N]:
23304
Static Load Capacity [N]:
74573

More Details

Nook Industries Offers the largest selections of rolled amce screw sizes in the industry. Rolled thread screws are cost effective and are stocked for quick delivery.

Similar in construction and materials to PowerAc™ Inch Acme Screws and Nuts, the Trapezoidal thread form screws and nuts include a centralizing (C) thread form to prevent wedging and binding. When compared to general-purpose thread forms (G), centralizing threads are manufactured with tighter tolerances and reduced clearance on the major diameter.

Bronze Inch Acme

Special high tensile bronze is selected for our smooth running, anti-wedging bronze nuts.
  • Material: Nook Bronze
  • Tensile Yield: 50,000 psi
  • Tensile Ultimate: 65,000 psi
  • Hardness: HB75
  • Dynamic co-efficient of friction: 0.125 with Nook Lubricant