Bench Centers and Specifications

STUHR Bench Centers are ideal for tool room and production inspection. Simple lever action tailstock center permits operator to place part between centers with one hand.

STUHR designs special inspection fixtures around standard components.

STUHR ships bench centers only after inspecting the assembly to insure that center height alignment, using a standard test bar, does not exceed .0002″. Repeatability is guaranteed.

14 Standard Sizes

All cast iron construction. Riser blocks are available to increase swing diameter.

Bench Center Specifications

     B SWING DIAMETER OVER BASE
      C SWING DIAMETER OVER INDICATOR BASE
MODEL A MAX. A MIN. B C D E F G H J NET WEIGHT SHIP WEIGHT SIZE OF BOX CAPACITY C/C
6″ x 18″ 19″ 5/8″ 6″ 4 – 3/4″ 5 – 7/8″ 6″ 4 – 1/2″ 29 – 1/2″ 4″ 5/8″ 75 lb. 100 lb. 9″ x 13″ x 32″ 250 lb.
 6″ x 36″ 37″ 5/8″ 6″ 4 – 3/4″ 5 – 7/8″ 6″ 4 – 1/2″ 47 – 1/2″ 4 – 1/2″ 5/8″  140 lb. 170 lb. 9″ x 13″ x 50″ 250 lb.
 12″ x 24″ 25″ 0″ 12″ 10″ 9″ 9 – 1/4″ 6 – 1/2″ 40 – 1/2″ 6 – 1/2″ 1″ 180 lb. 250 lb. 11″ x 18″ x 43″ 1500 lb.
 12″ x 36″ 37″ 0″ 12″ 10″ 9″ 9 – 1/4″ 6 – 1/2″ 52 – 1/2″ 6 – 1/2″ 1″ 225 lb. 300 lb. 11″ x 18″ x 55″ 1500 lb.
 12″ x 48″ 49″ 0″ 12″ 10″ 9″ 9 – 1/4″ 6 – 1/2″  64 – 1/2″ 6 – 1/2″ 1″ 285 lb. 360 lb. 11″ x 18″ x 67″ 1500 lb.
 12″ x 60″ 61″ 0″ 12″ 10″ 9″ 9 – 1/4″ 6 – 1/2″  76 – 1/2″ 7″ 1″ 370 lb. 450 lb. 11″ x 18″ x 79″ 1500 lb.
12″ x 72″ 73″ 0″ 12″ 10″ 9″ 9 – 1/4″ 6 – 1/2″ 88 – 1/2″ 7″ 1″ 425 lb. 525 lb. 11″ x 18″ x 91″ 1500 lb.
24″ x 48″ 49″ 0″ 24″ 21″ 16″ 9″ 15″ 82″ 9″ 3″ 1525 lb. 1700 lb. 19″ x 28″ x 85″ 6000 lb.
24″ x 60″ 61″ 0″ 24″ 21″ 16″ 9″ 15″ 94″ 9″ 3″ 1700 lb. 1900 lb. 19″ x 28″ x 97″ 6000 lb.
24″ x 72″ 73″ 0″ 24″ 21″ 16″ 9″ 15″ 106″ 9″ 3″ 1875 lb. 2100 lb. 19″ x 28″ x 109″ 6000 lb.
24″ x 84″ 85″ 0″ 24″ 21″ 16″ 9″ 15″ 118″ 9″ 3″ 2050 lb. 2300 lb. 19″ x 28″ x 121″ 6000 lb.
24″ x 96″ 97″ 0″ 24″ 21″ 16″ 9″ 15″ 130″ 9″ 3″ 2225 lb. 2500 lb. 19″ x 28″ x 133″ 6000 lb.
24″ x 120″ 121″ 0″ 24″ 21″ 16″ 9″ 15″ 154″ 9″ 3″ 2575 lb. 2900 lb. 19″ x 28″ x 157″ 6000 lb.

Spacers for headstock and tailstock can be furnished for above models to increase the swing diameter (dimension B.)
Refer to Price List BC -PL for breakdown of available sizes.

Standard Equipment

6″ Sizes-Base and two heads complete with standard 60° centers.
12″ Sizes-Base, two heads complete with standard 60° centers.
24″ Sizes-Base, two heads complete with standard 60° centers.
Note: On 24″ swing size, the center is retracted by means of hand wheel instead of lever.

Optional Equipment

Indicator Base with Standard and Vertical Rod
Swivel for Indicator Holding Rod
Indicator Holding Rod, 3/8″ diameter
Indicator Finger
Dial Indicator, graduated .001″, .0005″ or .0001″
Dial Indicator, graduated in metric
Carbide Tipped Centers-Live Centers
BullNose Centers-various diameters
Additional “Vee” Work Rests
Matched Headstock & Tailstock Assemblies of
individual units for special applications
Anti-Tip Angle Brackets
Heavy Duty Brackets for vertical mounting of bench centers
Headstock & Tailstock Spacers to increase work swing capacity
Certification Available

Roller Vee Specifications

Roller Vee Blocks are ideal for checking eccentricity and runout on parts that cannot be rotated between centers. Roller Vee Blocks can be setup to rotate a part with different diameters.
Primarily designed for mounting to various STUHR bench center bases, Roller Vees are also adaptable to surface plates, granite tables and machine tables.

A Min A MAX B MIN B MAX C D E F G H L MIN L MAX
MODEL RV-6-300 lb. capacity
 1″ Any 6 – 5/32″ 7 – 7/32″ 6 – 3/16″ 1 – 5/8″ .55 1/2″ 9/16″ 6″ 3/8″ 6″
MODEL RV-12-1500 lb. capacity
1 – 1/16″ Any 8 – 1/32″ 9 – 3/32″ 8 – 1/16″ 1 – 7/8″ .83″ 17/32″ 11/16″ 9 – 1/4″ 3/4″ 9″
MODEL RV-24-6000 lb. capacity
 1 – 11/32″  Any 11 – 19/32″ 12 – 21/32″ 11 – 5/8″ 2 – 1/2″ 1.14 11/16″ 1 – 1/16″ 9″ 1″ 12″

 

Cast Iron Precision Bases

RV MODEL BASE P/N A I J K
RV-6 178-400
178-425
26 – 3/8
44 – 3/8
4
4 – 1/2
29 – 1/2
47 – 1/2
4 – 1/2
4 – 1/2
 RV-12 178-510
178-500
178-525
178-550
178-575
35 – 7/8
47 – 7/8
59 – 7/8
71 – 7/8
83 – 7/8
6 – 1/2
6 – 1/2
6 – 1/2
7
7
 40 – 1/2
52 – 1/2
64 – 1/2
76 – 1/2
88 – 1/2
6 – 1/2
6 – 1/2
6 – 1/2
6 – 1/2
6 – 1/2
 RV-24 178-600
178-625
178-650
1007506
1004809
500-647
76 – 7/8
88 – 7/8
100 – 7/8
112 – 7/8
124 – 7/8
148 – 7/8
9
9
9
9
9
9
82
94
106
118
130
154
15
15
15
15
15
15

Riser Blocks

RV MODEL RISER P/N RISER HEIGHT
 RV-6 RV-661
RV-662
1″
2″
RV-12 RV-1291
RV-1292
1″
2″
RV-24 RV-2491
RV-2492
1″
2″

 

Indicator Base Unit
with Vertical Rod

RV MODEL INDICATOR BASE PIN
RV-6
RV-12
RV-12
278-400
278-500
278-600

Accessories Common To All Models

C-5111
C-5114
C-5115
C-5116
C-5167
C-5541
C-5542
C-5543
Indicator Finger
Swivel for Indicator Holding Rod
Indicator Holding rod 3/8″
Dial Indicator, .001″ Graduations
Dial Indicator, .0005″ Graduations
Dial Indicator, .0001″ Graduations
Dial Indicator, Metric, .002mm Graduations
Dial Indicator, Metric, .01mm Graduations

 

Special Design Service

We can provide bench centers with Roller Vee blocks for production inspection. Electronic measuring devices can be incorporated in the design. Consult your distributor for further information.

Vertical Support Frames For Vertical Mounting Of STUHR Bench Centers

Heavy Duty

Vertical support frames accommodate STUHR bench centers in a vertical position. Ideal for checking crank and cam shafts. We will design special holding and handling devices to suit your part and inspection objectives.

The vertical support frame features a wide stance to provide stability with three adjustable support feet for fine accurate positioning. The tailstock is properly counter balanced for easy adjustment.

Standard Features

Rugged welded steel construction
Wide stance design
Adjustable feet for accurate vertical positioning
Counterbalanced tailstock
Proper headstock center support
Bench Center can be easily removed from frame for horizontal work positioning
Over 45 different capacity combinations to accommodate work up to 72″ long and up to 32″ diameter

Portable Bench Center Designed for Vertical or Horizontal Inspection

The model 412 bench center features a spring-loaded tailstock center to speed loading/unloading of parts.

With the bench center set on a precision surface plate, center alignment will not exceed .0001″ when indicating a standard test bar. Repeatability is guaranteed.

Specification

Capacity: 12″ between centers
Max Diameter: 4″
Overall Length: 16.5″
Height: 5″
Width: 4″
Weight: 12 lbs.

stuhr-vertical_inspection