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VHD SERIES - FLANGE MOUNT VHD SERIES - THREAD MOUNT

VHD SERIES - Heavy Loads, High Axial Stiffness

 
 

Part Number Construction

Kerk VHD Anti-backlash Nut Assembly – 303 Stainless Steel Acme Lead Screw with Kerkote TFE Coating

The Kerk® VHD Series anti-backlash acme lead screw assembly provides the maximum load-carrying capability and the highest axial and radial stiffness of any Kerk nut designs. Designed for smooth, quiet operation and long life, the VHD assembly provides low drag torque by making use of the patented Kerk AXIAL TAKE-UP MECHANISM (see Kerk Technology section). Drag and wear associated with high pre-load forces are eliminated with the VHD Series. Screws are 303 stainless steel with Kerk's custom Kerkote® TFE extended life coating optional.

Assemblies are available cut-to-length or with screws machined to your requirements.

LEAD SCREWS | COMPARISON CHART | SCREW SIZE LIST | NUT FEATURE MATRIX | NUT STYLES

VHD SERIES: FLANGE MOUNT

Screw Ø

Nut Ø

Nut Length

Flange Ø

Flange Thickness

Mounting Hole Ø

Bolt Circle Ø

Hub Length

Hub Ø

Dynamic Load

Drag Torque

CAD Model

A
in.
(mm)

B
in.
(mm)

C
in.
(mm)

D
in.
(mm)

E
in.
(mm)

F
in.
(mm)

G
in.
(mm)

H
in.
(mm)

J
in.
(mm)


lbs.
(kg)


oz.-in.
(Nm)

 

1/2
(13)

1.12
(28.5)

2.3
(59)

1.75
(44.5)

.23
(5.9)

.22
(5.60)

1.406
(35.71)

.12
(3.1)

.93
(23.62)

150
(68)

2-6
(.014-.02)

Download

5/8
(16)

1.38
(35.1)

2.6
(66)

2.09
(53.1)

.28
(7.1)

.22
(5.60)

1.750
(44.45)

N/A
 

N/A
 

250
(113)

2-6
(.014-.02)

3/4
(19)

1.62
(41.2)

2.8
(71)

2.38
(60.5)

.31
(7.9)

.22
(5.60)

2.000
(50.80)

N/A
 

N/A
 

350
(159)

3-7
(.02-.05)

7/8
(22)

1.62
(41.2)

2.8
(71)

2.38
(60.5)

.31
(7.9)

.22
(5.60)

2.000
(50.80)

N/A
 

N/A
 

350
(159)

3-7
(.02-.05)

Outline Drawing – Kerk Acme Lead Screw Assembly with VHD Flange Mount Anti-backlash Nut
VHD SERIES: THREAD MOUNT

Screw Ø

Nut Ø

Nut Length

Thread

Thread Length

Dynamic Load

Drag Torque

CAD Model

A
in.
(mm)

B
in.
(mm)

C
in.
(mm)

M
in.

N
in.
(mm)


lbs.
(mm)


oz.-in.
(Nm)

 

1/2
(13)

1.12
(28.5)

2.5
(64)

15/16-16
 

.50
(12.7)

150
(68)

2-6
(.014-.04)

Download

5/8
(16)

1.38
(35.1)

2.8
(72)

1 1/4-16
 

.50
(12.7)

250
(113)

2-6
(.014-.04)

3/4
(19)

1.62
(41.2)

3.12
(79)

1 3/8-16
 

.50
(12.7)

350
(159)

3-7
(.02-.05)

7/8
(22)

1.62
(41.2)

3.12
(79)

1 3/8-16
 

.50
(12.7)

350
(159)

3-7
(.02-.05)

Outline Drawing – Kerk Acme Lead Screw Assembly with VHD Thread Mount Anti-backlash Nut

 

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