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Single cylindrical back-up rollers - execution in inches

Usually, the cages are made in bronze; in some cases, when the dimensions are small, the cage can be manufactured in press-forged sheet.

The sealing system is highly efficient, because it prevents outer agents (dust, mill scale and humidity) to enter the back-up roller; at the same time it prevents the leakage of grease. Grease lubrication is made through a groove on the inner ring.

Precision class P0. It can be manufactured with precision class P5, on request.

On request, they can be manufactured in stainless steel.

This series can be manufactured with cages or with full-complement of cylindrical rollers.

This back up roller is particularly suitable to work with high radial loads; thanks to its toughness, it maintains all its primary technical characteristics for a long flattening lifetime.

The entire borders made from the inner ring allow to bear the axial thrusts.

The single back-up roller with cylindrical rollers (execution in inches) has the following characteristics:

The outer ring and the inner ring are manufactured in case hardened UNI 100Cr6/SAE 52100 steel.

They reach hardness degree of 60+2 HRC.

Technical Characteristics

The single cylindrical back-up roller executed in inches is manufactured as alternative to the same series with tapered rollers.

The bearing is extremely tough and massive; it is made of one outer ring – which makes a unique body, once linked to the lateral thrust rings – and of an inner ring with entire borders, from which the rolling raceway comes out.

1. Seeger seal ring

2. ZRS seal ring

3. Support thrust ring

4. O-ring seal

5. Cylindrical rollers

6. Cage

7. Inner ring

8. Outer ring

9. O-ring seal

10. Support thrust ring

11. ZRS seal ring

12. Seeger seal ring

C.R. Ref.

100-0001

100-0001

100-0002

100-0002

100-0003

100-0003

100-0004

100-0004

100-0005

100-0005

100-0006

100-0006

100-0007

100-0007

100-0008

100-0008

100-0009

100-0009

100-0010

100-0010

100-0011

100-0011

100-0012

100-0012

100-0013

100-0013

100-0014

100-0014

100-0015

100-0015

100-0016

100-0016

100-0017

100-0017

100-0018

100-0018

100-0019

100-0019

B

mm./inch

28.575

1.1250

38.100

1.5000

41.275

1.6250

44.450

1.7500

50.800

2.0000

52.388

2.0625

53.975

2.1250

57.150

2.2500

63.500

2.5000

76.200

3.0000

85.725

3.3750

88.900

3.5000

101.600

4.0000

107.950

4.2500

127.000

5.0000

127.000

5.0000

120.650

4.7500

127.000

5.0000

120.650

4.7500

C

mm./inch

22.225

0.8750

28.578

1.1251

28.578

1.1251

28.578

1.1251

36.515

1.4376

36.515

1.4376

36.515

1.4376

34.928

1.3751

34.928

1.3751

48.423

1.9064

50.800

2.0000

50.800

2.0000

58.735

2.3124

58.735

2.3124

66.673

2.6249

71.438

2.8125

69.850

2.7500

69.850

2.7500

69.850

2.7500

D

mm./inch

21.463

0.8450

26.988

1.0625

26.988

1.0625

26.988

1.0625

34.925

1.3750

34.925

1.3750

34.925

1.3750

33.338

1.3125

33.338

1.3125

46.883

1.8438

49.213

1.9375

49.213

1.9375

57.150

2.2500

57.150

2.2500

65.088

2.5625

65.088

2.5625

68.265

2.6876

68.265

2.6876

68.265

2.6876

Cw

Radial N/Lbf

8970

2016

14340

3240

16500

3720

16500

3720

30000

6780

30000

6780

30000

6780

33600

7530

33600

7530

54600

12300

63300

14250

63300

14250

94800

21300

94800

21300

159000

35700

159000

35700

162600

36600

162600

36600

162600

36600

A

mm./inch

7.938

0.3125

11.113

0.4375

12.700

0.500

12.700

0.500

15.875

0.6250

15.875

0.6250

15.875

0.6250

19.050

0.7500

19.050

0.7500

20.638

0.8125

30.005

1.1813

30.005

1.1813

38.100

1.5000

38.100

1.5000

44.450

1.7500

44.450

1.7500

50.800

2.0000

50.800

2.0000

53.975

2.1250

Cw: Static load

C.R. Ref.

100-0020

100-0020

100-0021

100-0021

100-0022

100-0022

100-0023

100-0023

100-0024

100-0024

100-0025

100-0025

100-0026

100-0026

100-0027

100-0027

100-0028

100-0028

100-0029

100-0029

100-0030

100-0030

100-0031

100-0031

100-0032

100-0032

100-0033

100-0033

100-0034

100-0034

100-0035

100-0035

100-0036

100-0036

100-0037

100-0037

100-0038

100-0038

B.

mm./inch

127.000

5.0000

152.400

6.0000

142.875

5.6250

149.225

5.8750

177.800

7.0000

149.225

5.8750

158.750

6.2500

159.974

6.2982

177.800

7.0000

199.974

7.8730

203.200

8.0000

228.600

9.0000

177.800

7.0000

158.750

6.2500

203.200

8.0000

206.375

8.1250

249.974

9.8415

250.825

9.8750

260.350

10.2500

C

mm./inch

69.850

2.7500

69.850

2.7500

65.090

2.5626

65.090

2.5626

69.850

2.7500

74.615

2.9376

74.615

2.9376

74.615

2.9376

74.615

2.9376

74.615

2.9376

74.615

2.9376

74.615

2.9376

98.422

2.8749

73.025

2.8750

73.025

2.8750

104.775

4.1250

92.075

3.6250

92.075

3.6250

136.525

5.3750

C

mm./inch

69.850

2.7500

69.850

2.7500

65.090

2.5626

65.090

2.5626

69.850

2.7500

74.615

2.9376

74.615

2.9376

74.615

2.9376

74.615

2.9376

74.615

2.9376

74.615

2.9376

74.615

2.9376

98.422

2.8749

73.025

2.8750

73.025

2.8750

104.775

4.1250

92.075

3.6250

92.075

3.6250

136.525

5.3750

Cw

Radial N/Lbf

162600

36600

162600

36600

179700

40500

179700

40500

179700

40500

179700

40500

179700

40500

179700

40500

179700

40500

179700

40500

179700

40500

179700

40500

339000

75900

193800

43500

193800

43500

411000

92100

270900

60900

270900

60900

669000

150300

A

mm./inch

53.975

2.1250

53.975

2.1250

60.000

2.3622

60.000

2.3622

69.850

2.7500

70.000

2.7559

70.000

2.7559

70.000

2.7559

70.000

2.7559

70.000

2.7559

70.000

2.7559

70.000

2.7559

71.438

2.8125

85.725

3.3750

85.725

3.3750

88.900

3.5000

88.900

3.5000

88.900

3.5000

101.600

4.0000

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