the Flex-HoneŽ Tool

BRM's Flex-Hone Tool is protected by...
USA Patent Numbers 3384915, 3871139, 5211725, 5353553
US & Foreign Patents Allowed or Pending

For Any Type And Size of Cylinder...

The Flex-HoneŽ Process (Super finishing) produces a controlled surface condition unobtainable by any other method. It involves finish, geometry and metallurgical structure. A high percentage plateau free of cut, torn and folded metal (with radiused ports).

A resilient, flexible, honing tool with a soft cutting action. The abrasive (points) globules each have independent suspension that assures the Flex-HoneŽ to be self-centering, self aligning to the bore, and self-compensating for wear.

Specifically, it is a low-temperature abrading process that exposes the undisturbed base metal structure to produce a long wearing surface. It is a method of developing a surface on a metal part which is optically smooth and metallurgically free of any fragmented, amorphous or smeared metal from previous operations. It is accomplished at a low pressure where the “stones” float across the surface. The final achieved finish ensures a superior performance in situations dependant on the condition of the surface.

The particular type of Flex-HoneŽ crosshatch is extremely efficient in providing a multiplicity of oil grooves or valleys for oil retention as opposed to the often undirectional or uneven valleys common to the conventional type rigid hone. A crosshatch that usually remains as the cylinder wall has been wear-reduced by the FlexHoneŽ.
 

WHAT'S NEW with HONE TOOLS...

The Diamond Flex-Hone tool is designed for use on any type or size of cylinder from 4mm up to 20mm in diameter. Other sizes are available by special order. Designed for surface finishing and cross hole deburring of harder materials such as carbide, ceramic and space age alloys. This remarkable new Flex-Hone is an efficient solution to your toughest applications. Available in three different grit selections. NOTE: Order by bore size, 4mm- 3/16 are 6" OAL 5mm-20mm" are 8" OAL

 

If Your Specifications Call For:

  • Developing a surface plateau of over 60%
  • Producing an oil holding cross-hatch pattern
  • Reducing Ra, Rpk and Rvk values
  • Increased bearing area

If You Want benefits of:

  • Lowered oil consumption
  • Less blow-by
  • Less friction
  • Improved sealing surface

Then Flex-HoneŽ it!
Typical Applications Include:

  • Air Compressors • Compressed Air Tool Bodies • Hydraulic Ram Cylinders • Brake Cylinders (Wheel)

  • Hydraulic Valve Bodies & Valve Guides • Clutch and Brake Master Cylinders

  • Hydraulic Motor Bodies • Finishing of Stainless Steel Tubing

  • Pneumatic Cylinders • Brake Rotors

  • Surface finishing of Boiler Components • Engine Cylinders and Block Liners

Although the FLEX-HONEŽ TOOL is manufactured in an extensive range of diameter sizes and grits that suit most applications, there will be times that the Flex-HoneŽ Tool must be tailor made to achieve the results you may require. Please consult factory for pricing and delivery time on all special order, special application hones.

Abrasive Options

 
Grit Sizes
Abrasive Types
20
40
60
80
120
180
240
320
400
600
800
SC=Silicon Carbide
X
X
X
X
STANDARD
STANDARD
STANDARD
X
X
X
X
AO=Aluminum Oxide
X
X
X
X
X
X
X
X
X
X
X
BC=Boron Carbide
X
X
X
X
X
X
X
X
X
X
X
WC=Tungsten Carbide
 
 
 
 
 
 
 
 
 
 
 
(either 100% or 50/50)
X
X
X
X
X
X
X
X
 
 
 
Z Grain - Alumina Zirconia
 
 
 
 
 
 
 
 
 
 
 
No.1525 (25%Zirconia/75%Alumina)
 
 
X
X
X
X
X
X
 
 
 
Z Grain - Alumina Zirconia
 
 
 
 
 
 
 
 
 
 
 
No.1549 (40%Zirconia/60%Alumina)
 
 
 
 
X
X
X
X
 
 
 
Levigated Alumina
Available in extra fine grit only

To assist in selection of proper hone, this information is a good starting point. Actual measurements
must be made after honing, as numbers will vary depending on the material being honed and the media used.

Grit Finish Range

800 grit Ra 3-10 .05 - .2 Micrometer
600 grit Ra 8-12 .2 - .3 Micrometer
400 grit Ra 10-20 .3 - .6 Micrometer
320 grit Ra 18-30 .5 - .7 Micrometer
240 grit Ra 24-32 .6 - .8 Micrometer
180 grit Ra 30-40 .7 - . 1 Micrometer
120 grit Ra 35-50 .9 -1.4 Micrometer
80 grit Ra 45-64 1.2 - 1.6 Micrometer
60 grit Ra 60-80 1.5 - 2 Micrometer
40 grit Ra 70-125 1.7 to 3.2 Micrometers
20 grit Ra 125-250 3.2 to 6.3 Micrometers

What size should I order?

A hone tool's diameter is determined by the nominal bore size in which the tool is to be operate. A cylinder hone is always produced and used in an oversize condition. The degree of oversize creates pressure and a soft cutting action on cylinder walls. For example a 1" Flex-Hone tool is ordered if a 1" bore (I.D.) is to be finished, the built in oversize provides the proper cut. Remember that all tools are provided in oversized, so do not add inches or mm's to the ID that you are machining. If the bore size is between standard Flex-Hone sizes, the next larger standard Flex-Hone should be selected.

Important note:

If the Ra (surface finish) of the part being machined needs to change more than 20 to 30 points, you may need to use steps to acheive the proper final Ra. As an example, if you were trying to change a 80 Ra to a 20 Ra, you may need to start with a 120 or 180 grit hone and then finish with a 240 or 320 grit. This stepping concept reduces the chance of damaging the tool due to over heating, when too fine a grit is used for an extended run time to try and remove excessive roughness.

 

Brake Cylinders, Hydraulics, Valve Guides, etc.

4mm - 3/16" are 6" OAL
Balance 8" OAL

 


 

 


Catalog Number MM For Bore Sizes  
BC 4mm (.157")    
BC 4.5mm (.177")    
BC 3/16" (4.75mm)    
BC 5mm (.197")    
BC 5.5mm (.217")    
BC 6.4mm (.250")    
BC 7mm (.276")    
BC 8mm (.315")    
BC 9mm (.354")    
BC 9.5mm (.375")    
BC 10mm (.394")    
BC 11mm (.433")    
BC 12mm (.472")    
BC 1/2" (12.7 mm)    
BC 14mm (.552")    
BC 5/8" (16 mm)    
BC 18mm (.709")    
BC 3/4" (19 mm)    
BC 20mm (.787")    
BC 7/8" (22 mm)    
BC 15/16" (23.8 mm)    
BC 1" (25.4 mm)    
BC 1 1/8" (29 mm)    
BC 1 1/4" (31.8 mm)    
BC 1 3/8" (35 mm)    
BC 1 1/2" (38 mm)    
BC 1 5/8" (41 mm)    
BC 1 3/4" (45 mm)    
BC 1 7/8" (48 mm)    
BC 2" (51 mm)    
BC 2 1/8" (54 mm)    
BC 2 1/4" (57 mm)    
BC 2 3/8" (60 mm)    
BC 2 1/2" (64 mm)    
BC 2 5/8" (67 mm)    
BC 2 3/4" (70 mm)    
BC 2 7/8" (73 mm)    
BC 3" (76 mm)    
       
 


Disc Brakes

(5" OAL)

Catalog Number MM For Bore Sizes
DBC 1 1/2" (38 mm)    
DBC 1 3/4" (45 mm)    
DBC 2 1/8" (54 mm)    
DBC 2 1/2" (64 mm)    
DBC 2 3/4" (70 mm)    
DBC 3 1/8" (79 mm)    
 
 
 

Block Cylinders or Liners

Heavy-duty Flex HonesŽ
3 thru 4 1/2” dia. are 13 1/2” OAL, with Balance at 17 1/2” OAL

 

 

Catalog Number MM For Bore Sizes
GBD 3" (76mm) 3" to 2 3/4"
GBD 3 1/4" (83mm) 3 1/4" to 3"
GBD 3 1/2" (89mm) 3 1/2" to 3"
GBD 3 3/4" (95mm) 3 3/4" to 3 1/4"
GBD 4" (101mm) 4" to 3 1/2"
GBD 4 1/4" (108mm) 4 1/4" to 3 3/4"
GBD 4 1/2" (114 mm)" 4 1/2" to 4"
GBD 5" (127 mm) 5" to 4 1/2"
GBD 5 1/2" (140 mm) 5 1/2" to 5"
GBD 6" (152mm) 6" to 5 1/2"
GBD 6 1/2" (165mm) 6 1/2" to 6"
GBD 7" (178 mm) 7" to 6 1/2"
GBD 7 1/2" (190mm) 7 1/2" to 7"
GBD 8" (203mm) 8" to 7 1/2"
     
Flex-HoneŽ Brake Cylinder Kits For Japanese and European Cars
BC Kit A (18 mm 22 mm 29 mm ) 320 Grit Aluminum Oxide
BC Kit B (25 mm 29 mm 35 mm) 320 Grit Aluminum Oxide
BC Kit C (41 mm 51 mm 60 mm ) 240 Grit Silicon Carbide
For Compact, Medium and Large Cars
BC Kit D (18 mm 20 mm 22 mm 25 mm 29 mm) 180 Grit SC
BC Kit (22, 29, 35 mm) 120, 180, 240 SC
 
Flex-HoneŽ Disc Brake Caliper Kit For Japanese and European Cars and Light Trucks
DBC Kit E (38 mm 45 mm 54 mm 64 mm ) 320 Grit SC
DBC Kit (45, 54, 64, 70, 79 mm) 180SC
 
Valve Guide Kits-Transmission Bodies
VGF Kit (6.4 mm 7 mm 8 mm 9 mm 9.5 mm 10 mm 11 mm)
240 Grit Silicon Carbide
 
* Kit has a savings of 10% over individual purchases.
 
 

 

Heavy Duty

Hex Shaft is 34"OAL

Catalog Number
3" Core (1/2" Hex Shaft)
GBDH 8" (203mm)
GBD 8 1/2" (216 mm)
GBD 9" (228 mm)
GBD 9 1/2" (241 mm)
GBD 10" (254 mm)
4" Core (1/2" Hex Shaft)
GBD 10 1/2" (267 mm)
GBD 11" (280 mm)
GBD 11 1/2" (292 mm)
GBD 12" (305 mm)
5" Core (5/8" Hex-Shaft)  
GBD 12 1/2" (318 mm)
GBD 13" (330 mm)
GBD 13 1/2" (344 mm)
GBD 14" (355 mm)
6" Core (5/8" Hex Shaft)  
GBD 15" (381 mm)
GBD 16" (406 mm)
8" Core (5/8" Hex Shaft)  
GBD 17" (432 mm)
GBD 18" (457 mm)
 

Extra Heavy Duty

Shafts are 3/4" to 1 1/4" All 120SC

Catalog Number

MM

Drum Diameter
Section
# of Drum Sections
Shaft Diameter
GBDX 19" (483 mm) 11 1/2" A 22 3/4"
GBDX 20" (508 mm) 11 1/2" B 22 3/4"
GBDX 21" (533 mm) 11 1/2" C 22 3/4"
GBDX 22" (559 mm) 11 1/2" D 22 3/4"
GBDX 23" (584 mm) 15 1/2" A 29 3/4"
GBDX 24" (610 mm) 15 1/2" B 29 3/4"
GBDX 25" (635 mm) 15 1/2" C 29 3/4"
GBDX 26" (660 mm) 15 1/2" D 29 3/4"
GBDX 27" (686 mm) 19 1/2" A 36 1"
GBDX 28" (711 mm) 19 1/2" B 36 1"
GBDX 29" (737 mm) 19 1/2" C 36 1"
GBDX 30" (762 mm) 19 1/2" D 36 1"
GBDX 31" (787 mm) 19 1/2" E 36 1"
GBDX 32" (813 mm) 24 1/2" A 44 1 1/4"
GBDX 33" (838 mm) 24 1/2" B 44 1 1/4"
GBDX 34" (864 mm) 24 1/2" C 44 1 1/4"
GBDX 35" (889 mm) 24 1/2" D 44 1 1/4"
GBDX 36" (914 mm) 24 1/2" E 44 1 1/4"
 
GBDX Replacement Sections Available For Above GBDX Flex Hone Tools
 
Catalog Number Grit Size Overall Trim  
GBDX-A Section 120SC 4 1/8" (105 mm)  
GBDX-B Section 120SC 4 5/8" (118 mm)  
GBDX-C Section 120SC 5 1/4" (133 mm)  
GBDX-D Section 120SC 5 3/4" (146 mm)  
GBDX-E Section 120SC 6 3/8" (162 mm)  
 

Flex-HoneŽ Tools for Handguns

Flex-HoneŽ Tools for polishing revolver cylinders 3” OAL
 

 
400SC
800SC
.357 MAG./.38 CYLINDER

00899

00900
.41 MAG. CYLINDER
00901
00902
.44 MAG CYLINDER
00903
00904
.45 ACP CYLINDER
00905
00906
.45 COLT CYLINDER
00907
00908
     
 
400SC
800SC
1911 Main Spring Housing 4" OAL
00909
00910
1911 Slide Lug Area - 8" OAL   BC18M800
S&W, Beretta, Sig. Semi-Auto Internal Slide - 8" OAL  
BC12800



Flex-HoneŽ Tools for Shotguns

With protective stem coating.

Barrel Flex-HoneŽ Tools 34" OAL
 
180SC
800AO
 
10 Gauge 00607 00608  
12 Gauge 00048 00049  
16 Gauge 00050 00051  
20 Gauge 00052 00053  
.410 Bore 00609 00610  
 
Chamber Flex-HoneŽ Tools 12" OAL
 
 

800AO

 
10 Gauge   00611  
12 Gauge   00054  
16 Gauge   00055  
20 Gauge   00056  
.410 Bore   00612  



Flex-HoneŽ Tools for Paintball Guns

With protective stem coating.

Barrel Flex-HoneŽ Tools 18" OAL
 
180SC
600AO
800AO
Levigated Aluminum
.68 CAL
00750 00733 00461 01199
         
Rear Bore Flex-HoneŽ Tools 10" OAL
 
 
600AO
800AO
 
RB .850  

00642

00734
 

Gun brushes made in stainless steel or phosphor bronze fill. Pro Player and Airsmith kits are also available.


For pricing and availability...
Please call 1(561) 616-3961 or 1(800) 266-4497 between 1pm and 7pm (EST)
(Minimum order requirements apply)

 


Link to Full Product Index
Link to all products!
GWR Specialty Automotive Products
Copyright '96 -' 14
1(800) 266-4497
Email: sales@gwrauto.com

How to order!

 

Some Information Š BRM Co., Inc.