937-754-1750 sales@fischerengr.com

Bend Testers

Which Bend Tester is Best for Your Application?

  • The Model BT1D is our newest bend tester. It uses a new generation design that replaces and improves upon our classic Model BT1B design. It is adjustable for the typical range of tests required by fabricators, manufacturers, contractors and schools. It is moderately portable.
  • The Model BT1C is very portable but less versatile than the BT1D. It is intended for applications where the material and thickness to be bent are usually the same. While this model is not adjustable for different radii, it can be converted by interchanging additional parts.
  • The Model BT3 is the top of the line. It uses the wraparound bending principle to produce inside bend radii in the range of 0.032 to 1.875 inches. It is intended for laboratory use where a wide range of welded materials and thicknesses must be tested.
  • What mandrel size should you use? Use our table to find the code reference for your application.
All BT1 Series Bend Testers share these common features
  • The weld surface to be evaluated never contacts any hard surface during bending
  • Bottom ejection design assures that the specimen will not get stuck
  • Hardened steel rollers with heavy-duty needle bearings do not drag on the specimen
  • A 1.500 in. diameter, hardened, tool steel mandrel is provided as a standard accessory
  • Optional mandrels are available to meet any welding code or standard
Model BT1D Bend Tester
  • Easily adjusted for different bend radii
  • 1/8 to 1-7/8  inch bend radii standard
  • Rapid, multiple bends possible
  • For manufacturing/fabricating environments
  • Integral hydraulic system
  • Portable
  • Air, hand and electric driven versions

BT1D ROLLER GUIDED BEND TESTERS


A 1.500 inch outside diameter mandrel and the required adapter are provided as standard with each bend tester.

Part
No.
Description Price
BT1D Pneumatic Version

$3945.00

22″H x 17″W x 6″D (Bender), 6″H x 5″W x 15″D (Pump), 67 lbs. total
BT1D-E Electric Version

$5590.00

22″H x 17″W x 6″D (Bender), 7″H x 7″W x 14″D (Pump), 78 lbs. total
BT1D-HO
Hand-Operated Version

$3735.00

22″H x 17″W x 6″D (Bender), 6″H x 4″W x 14″D (Pump), 65 lbs.
Model BT1C Bend Tester
  • Single bend radius for economy
  • Convertible from 1/4″ up to 1-3/4″ bend radii
  • Rapid, multiple bends possible
  • For manufacturing/fabricating environments
  • Integral hydraulic system
  • Portable
  • Air, hand and electric driven versions

BT1C ROLLER GUIDED BEND TESTERS

A 1.500 inch outside diameter mandrel and the required adapter are provided as standard with each bend tester.

Part No. Description Price
BT1C

Pneumatic Version

20”H x 11”W x 6”D (Bender), 5.7”H x 5.6”W x 14.7”D (Pump), 42 lbs. total.

$2590.00
BT1C-E

Electric Version

20”H x 11”W x 6”D (Bender), 14”H x 9.6”W x 9.6”D (Pump), 52 lbs. total.

$4295.00

BT1C-HO

Hand-Operated Version

20”H x 11”W x 6”D (Bender), 5.6”H x 3.8”W x 13.3”D (Pump), 41 lbs. total.

$2490.00

BT1C ROLLER PLATES

The Model BT1C Bend Tester requires a different set of roller plates for each different size of mandrel to be used. To order a set of roller plates for a given mandrel size, use the prefix BT1-RP followed by the diameter of mandrel to be used. For example, to order roller plates for a BT1-M3.500 mandrel, order roller plates using part number BT1-RP3.500. To order a complete roller plate assembly (with rollers, bearings and shafts), add -WR to the part number; for example, BT1-RP3.500-WR.
Also, please specify the code or standard you will be using.

Part No. Description Price
BT1-RP0.500 through BT1-RP2.500 Roller plates (per set of two) $215.00
BT1-RP3.000 through BT1-RP3.500 Roller plates (per set of two) $240.00
-WR Complete Roller Plate Assy.

Add
$310.00

Model BT3 Bend Tester

Why Fischer Wraparound Bend Testers are Special

 

  • No one else in the industry offers such a wide selection of standard wraparound mandrels. The Model BT3 is not limited to a few bending radii. It will not become obsolete if your code/standard requirements change. It is adjustable for any bend radii between 1/32 and 2.5 inches. Shown below is the 1/16 inch diameter mandrel we developed for the Naval Surface Warfare Center. Also shown is a 0.016 inch thick titanium specimen tested using this mandrel.

  • The Model BT3 Bend Tester uses a unique method for wrapping the bend specimen around the mandrel. Specimens are forced to conform to the mandrel surface. This is especially useful for specimens from dissimilar metal weldments or those with significantly different weld and base metal strengths. When tested in a standard guided bend tester, primary bending will occur in the weakest material. The effective radius in the bend can become so small that the maximum elongation property of the material is exceeded, resulting in fracture.
  • For mandrels larger than 1/2 inch, a knurled surface is used to drive the specimen being tested. For routine bends, no special clamping or specimen preparation is required. We call this “quick clamping”.

 

  • The best choice for dissimilar metal weld tests
  • Wrap-around principle minimizes “kinking”
  • Laboratory precision
  • Rapid mandrel changeover
  • 1/32 to 2.5 inch bend radii
  • Full, unobstructed view
  • Integral hydraulic system
  • Typical Delivery in 8-10 weeks

BT3 WRAPAROUND GUIDED BEND TESTERS

A 1.500 inch outside diameter mandrel, a standard mandrel support and roller are provided as standard with each unit.

The hydraulic pump motor is wired for 115 vac, 1 phase, 60 Hz input.

Part
No.
Description

Price

BT3-B Bench Version  $12,800
12″H x 24″W x 18″D (Bender), 9″H x
25″W x 7″D (Pump), 350 lbs.
BT3-P Pedestal Version  $13,300
46″H x 25″W x 22″D, 400 lbs.

BT3 SERIES MANDRELS

 

The last four digits of the Mandrel Part Number give the mandrel outside diameter in inches.

For sizes not shown, please call for price and delivery.

MandrelPart No. Support Required
(See Below)
RollerRequired
(See Below)
Price
BT3-M0.063 None BT3-R1 $480.00
BT3-M0.125 None BT3-R1 450.00
BT3-M0.250 BT3-MS1 BT3-R1 170.00
BT3-M0.375 BT3-MS1 BT3-R1 160.00
BT3-M0.400 BT3-MS1 BT3-R1 160.00
BT3-M0.500 BT3-MS1 BT3-R1 125.00
BT3-M0.625 BT3-MS1 BT3-R1 225.00
BT3-M0.750 BT3-MS2 BT3-R0 250.00
BT3-M0.872 BT3-MS2 BT3-R0 275.00
BT3-M1.000 BT3-MS2 BT3-R0 200.00
BT3-M1.120 BT3-MS2 BT3-R0 275.00
BT3-M1.250 BT3-MS0 BT3-R0 230.00
BT3-M1.500* BT3-MS0* BT3-R0* 265.00
BT3-M2.000 BT3-MS0 BT3-R0 270.00
BT3-M2.063 BT3-MS0 BT3-R0 300.00
BT3-M2.500 BT3-MS0 BT3-R0 310.00
BT3-M3.000 BT3-MS0 BT3-R0 340.00
BT3-M3.500 BT3-MS0 BT3-R2 380.00
BT3-M3.750 BT3-MS0 BT3-R2 425.00
BT3-M4.000 BT3-MS0 BT3-R2 645.00
BT3-M4.500** BT3-MS0 BT3-R2 760.00
BT3-M5.000** BT3-MS0 BT3-R2 860.00
Supports BT3-MS0* 110.00
BT3-MS1 205.00
BT3-MS2 205.00
Rollers BT3-R0* 165.00
BT3-R1 220.00
BT3-R2 190.00
  * These items come with the BT3 as standard parts.

 ** Mandrels with a diameter > 4.000 in. also require a BT3-4B Shoe.

Fischer Mandrels

Why Fischer Mandrels and Mandrel Adapters are Special

All mandrels are hardened tool steel. All BT1 Series mandrels include our patented, knurled surface,  to reduce the possibility that the specimen will slip sideways during bending. This works in most cases. For severe cases of the dissimilar weld and base metals, either longitudinal bend specimens or the Model BT3 Bend Tester is the better choice.

The numerical portion of the mandrel part number is the mean outside diameter, in inches, of the mandrel. The smaller mandrels require an adapter.

We have the largest selection of standard mandrel sizes in the industry. Please see our price sheet for a listing. For special sizes, call for price and delivery. We may have already made the size you need. If not, we can!

Bend radius is calculated by using the code or standard, the material being welded, and the material thickness.

Each code and standard lists the required bend radius and the associated roller spacing to be used for a given material and thickness.

None of the commercial or military codes or standards requires you to bend any specimen thicker than 3/8 inch (1/2 inch for API 1104). Even if you are testing 1-1/2 inch thick material, the codes instruct you on how to prepare side bend specimens which are only 3/8 inch thick (1/2 inch for API 1104). These 3/8 (1/2) x 1-1/2 inch side bend specimens are easily bent using a 1-1/2 inch diameter mandrel (3-1/2 inch for API 1104

Code or Standard Bend Radius Description of the
Test
Guided Bend Wraparound
ASME Section IX-19 Fig. QW-466.2 Fig. QW-466.3 Parag. QW-160
API 1104 2013 Fig. 8 NA Parag. 5.6.4, 5.6.5
AWS B2.1:2014 Fig. A.5A Fig. A.5C Parag. 4.7.6
AWS D1.1:2020 Fig. 6.13 Fig. 6.12 Parag. 6.10.3.1

BT1 SERIES MANDRELS

The last four digits of the Mandrel Part Number give the mandrel outside diameter in inches. For sizes not shown, please call for price and delivery.

Mandrel Part No. Price Mandrel Adapter Required  Price
BT1-M0.250

$100.00

BT1-MA3

$195.00

BT1-M0.260 100.00
BT1-M0.436 100.00
BT1-M0.500 125.00 BT1-MA1

155.00

BT1-M0.625 125.00
BT1-M0.750 125.00
BT1-M0.872 135.00 BT1-MA2

155.00

BT1-M1.000 135.00
BT1-M1.120 140.00
BT1-M1.250 145.00 BT1-MA0

Standard with
BT1C and BT1D

BT1-M1.500 Standard
BT1-M2.000 200.00
BT1-M2.063 210.00
BT1-M2.500 220.00
BT1-M3.000 250.00
BT1-M3.500 325.00
BT1-M3.750 360.00
  • All prices are F.O.B. Dayton, Ohio.
  • Terms: first order cash, check or credit card, then N30, with approved credit.
  • Prices and Specifications are subject to change without notice.
  • 15% Minimum restocking charge for all returned goods (no returns of special order items).
  • Minimum Order is $100.
  • Most major credit cards accepted.
  • The prices listed here are for sales within the US and Canada. Sales to other countries may be higher because of additional costs required for power modification, international transactions and shipping.

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Send mail tosales@fischerengr.comwith questions or comments about these services.