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Type RA Roller Burnishing Tools For cylindrical outer surfaces with diameters of 3-160 mm

Application: ● Adjustable size roller burnishing tools for bore tolerance up to class IT 8 ● Type RAP with compensating roller head for bore tolerance up to class IT 11 ● Right hand rotation ● For use on CNC-controlled lathes, drills, milling machines, and machining centers as well as manual machines ● Achievable surface quality: Rz < 1 µm (Ra = 0.2 µm) ● Suitable for metals with tensile strength up to 1400 N/mm2 and maximum hardness of 45 HRC

Øl Øm

k

Øe

Advantages: ● ● ● ● ●

f

Short cycle time Convenient diameter adjustment Minimal lubrication required (oil or emulsion) Reliable, high precision performance Automatic expansion upon rapid retraction prevents surface damage ● Easy to change wear parts ● Standard tool sizes stocked (see page 1.7 for standard sizes) ● Special diameter tools available with quick delivery

d

Øa

Parameters:

Basic tool design:

h

c

● Circumferential speed: up to 250 m/min. ● Feed rate: 0.05 - 0.3 mm/rev./roller

i

Øg

● ECOROLL® Type RA roller burnishing tools consist of a tool body and roller head. ● Tool body includes shank and diameter adjustment assembly. ● Roller head consists of the external cone, cage, and rollers. ● Roller heads interchangeable within the diameter range for the tool body size. ● Cylindrical shanks standard ● Morse taper shanks also available

ØD Øb

Rolling length: When equipped with a standard shank, the tool’s rolling length is limited (see the following table). For longer workpieces ECOROLL® can supply roller burnishing tools for unlimited rolling length. These tools are equipped with a hollow, reinforced cylindrical shank.

Tool body (mm)

Diameter range D (mm)

RA1

< 12

a

b

Ø 25h6 × 60 ×15

55

45

limited Ø exf

unlimited Ø l ×k ×m

Ø 20h6 × 50 (MK2)

RA2

⭌ 12

< 25

Ø 25h6 × 56 (MK3)

Ø 40h6 × 70 ×28

73

65

RA3

⭌ 25

< 55

Ø 40h6 × 70 (MK4)

Ø 80h6 × 90 ×57

114

105

Ø 40h6 × 70 (MK4)

Ø 110h6 × 110 ×88

152

140

Ø 150h6 × 120 ×113

190

180

Ø 190h6 × 150 ×150 1)

238

RA4

⭌ 55

< 85

RA5

⭌ 85

< 110

RA6 1)

3

Tool shank: Morse taper or cyl. shank

⭌ 110

< 160

Ø 50h6 × 80 (MK5)

Maximum diameter for unlimited rolling length is 145 mm For standard diameters and rolling lengths, please see page 1.7. 2004-07-01 Subject to revision

c

d

21

81

i

80 99 124 28

108

35

130

156

225 All dimensions in mm

1.6

1


Type RA Roller Burnishing Tools

Tool body

RA1 ≥3 < 12

Standard Sizes The standard range of ECOROLL® tools accounts for the assembly and installation dimensions of many standard and readily available parts. Most diameters can be accommodated within the adjustable range. Non-standard diameters and rolling lengths are available by request. For longer or unlimited rolling lengths, tools can be equipped with hollow shank ZU.

RA2 ≥ 12 < 25

RA3 ≥ 25 < 55

How to order: Shank type Design version Machining diameter Tool body

RA4 ≥ 55 < 85

RA5 ≥ 85 < 110

Design version: 3: with non-feeding cage 4: with self-feeding cage

Shank: MK:

Morse taper

ZS:

Cylindrical shank for limited rolling length

ZU:

Cylindrical shank for unlimited rolling length

RA6 ⭌ 110 < 160

1)

Rollers

Nominal diameter

Setting range

mm 3 5 6 7 8 9 10 12 14 15 16 17 18 20 22 24 25 28 30 32 35 40 45 50 55 60 63 65 70 75 80 85 90 95 100 105 110 115 120 125 130 140 150 160

– / + mm

Øg×h

radius r

pieces

mm

mm

5 x 16 S

1.5

85

8 x 25 S

2.5

110

14 x 35 S

4

135

3

– 0.4 / + 0.1 5

7

9 – 0.6 / + 0.1

502 TechneCenter Drive, Suite C Milford, OH 45150 Phone: (513) 248-4700 Cell: (513) 477-5784 FAX: (513) 248-4265 E-Mail: tjacobs@ecoroll.com Homepage: http://www.ecoroll.com

1.7

11

9

11

Please exchange only complete sets of rollers!

ECOROLL® Corporation TOOL TECHNOLOGY

Standard rolling length mm

Quantity

1)

ECOROLL® AG . . . for a smooth operation

2004-07-01 Subject to revision

WE R K Z E U G T E C H N I K Postfach 3142, D-29231 Celle Hans-Heinrich-Warnke-Str. 8 29227 Celle Telephone: +49 (0) 5141/ 98 65-0 FAX: +49 (0) 5141/ 88 14 40 E-Mail: mail@ecoroll.de Homepage: http://www.ecoroll.de


Ra tools design versions 1,2,3,4,5,6