Optibelt OPTIKRIK 0, OPTIKRIK III, OPTIKRIK II, OPTIKRIK I Instruction Manual

OPTIKRIK

TENSION GAUGES

FOR OPTIBELT V-BELTS AND
RIBBED BELTS

This simplied method for static tension measuring should be used
for installation and maintenance tensioning of the belt when the
important technical data is unavailable and the optimum tension
cannot be calculated. This method requires only knowledge of the
small pulley diameter and the belt section and construction. The
gauges may also be used to set tensions when the optimum tension
has been calculated from known technical data.

OPTIBELT TENSION GAUGES – INSTRUCTIONS FOR USE –

rubber nger loop

indicator arm

pressure spring

A B C

1. Select the gauge appropriate to the belt section and construction being tensioned. See notes below the simplied
tensioning table.

2. The illustration above (A, B or C) shows three ways to hold the gauge so that pressure is applied to the pad only.

3. Position the gauge on one of the belts on the drive in the middle of an accessible span length. Take care to ensure that
the gauge is only in contact with one of the belts, and that the indicator arm is pushed down into the gauge body.
Align the gauge so that its body is parallel with the sides of the belt.

4. Push down on the pressure pad slowly and rmly with one nger in one of the ways illustrated above (A, B or C).

When a “click” is heard and / or felt, stop immediately and remove the gauge carefully to avoid disturbing the indicator
arm.

pressure pad

pocket clip

V-belt

Tension Gauges:

OPTIKRIK 0 Range: 15 - 35 Lbs. / 70 - 150 N
OPTIKRIK I Range: 30 - 150 Lbs. / 150 - 600 N
OPTIKRIK II Range: 100 - 300 Lbs. / 500 - 1400 N
OPTIKRIK III Range: 300 - 700 Lbs. / 1300 - 3100 N

5. Read the gauge to judge the tension as follows and as illustrated in the sketch above.

6. Turn the gauge sideways to ascertain the exact point where the top surface of the indicator arm crosses the scale.

7. Mark this point mentally or with a thumbnail and turn the gauge to read the scale.

8. Check the tension found against the simplied tensioning table or the calculated tension.
Tighten or slacken the belt, if necessary.

© ARNTZ OPTIBELT GROUP

888-529-8844 WWW.OPTIBELT.CA

V-BELTS

Diameter

Belt
section

A/AX
13/X13
4L

Z/ZX
10/X10
3L

B/BX

17/X17
5L

C/CX
22/X22

3V/3VX
9N/9NX
SPZ/XPZ

SPA /XPA

5V/5VX

15N/15NX
SPB/XPB

SPC/XPC

8V

* Tension values for these pulleys and belt types must be calculated, please consult an OPTIBELT representative.

of the small

pulley

[in]

≤ 3.15
> 3.15 ≤ 4.12
> 4.12 ≤ 5.20
> 5.20*

≤ 2.20
> 2.20 ≤ 2.80
> 2.80 ≤ 3.95
> 3.95*

≤ 4.90
> 4.90 ≤ 6.30
> 6.30 ≤ 8.00
> 8.00*

≤ 8.00
> 8.00 ≤ 9.75
> 9.75 ≤ 14.0
> 14.0*

≤ 2.80
> 2.80 ≤ 3.65
> 3.65 ≤ 5.00
> 5.00*

≤ 3.95
> 3.95 ≤ 5.50
> 5.50 ≤ 8.00
> 8.00*

≤ 6.30
> 6.30 ≤ 9.00
> 9.00 ≤ 14.0
> 14.0*

≤ 9.75
> 9.75 ≤ 14.0
> 14.0 ≤ 21.2
> 21.2*

Standard

(wrapped)

Initial

installation

35
45

70

90
120
140

70

90
110

160
180
200

45

55

80

80

90
110

150
160
200

220
310
400

After

30-120 min.

operation

25
35
55

70
90
110

55

70
90

110
140
160

35
45
55

55

70
90

110
120
160

180
250
310

SUPER X-POWER

Initial

installation

45
55

90

120
140
160

100
110

135

180
200
220

55

70
90

90

110

135

160
190
220

310
360
450

Check of the belt tension with help of the length addition value

TENSION VALUES MEASURED IN: LBS.

RED POWER 3

SUPER TX

After

30-120 min.

operation

35
45

70

90
110
130

80

90
100

140
160
180

45

55

70

70

90
100

120
150
180

250
270
350

HVAC POWER

Initial

installation

new belts

45
55

90

— — — — —

100
110

135

— — — — —

55

70
90

90

110

135

160
190
220

310
360
450

New

installation

existing belts

35
45

70

80
90

100

45
55

70

70
90

100

120
150
180

250
270
350

BLUE POWER

Diameter

of the small

pulley [in]

— — —

— — —

— — —

— — —

≤ 7.00
> 7.00 ≤ 9.30
> 9.30 ≤ 15.8
> 15.8*

≤ 11.0
> 11.0 ≤ 14.7
> 14.7 ≤ 27.5
> 27.5*

Initial

installation

new belts

175
275
375

350
560
700

After

30-120 min.

operation

150
200

275

275
425

550

AUTOMOTIVE BELTS

Belt section Initial installation

AVX 10, MARATHON 1 & 2 550 ± 50 350 ± 50 ≥ 200

AVX 13, MARATHON 1 & 2 650 ± 50 400 ± 50 ≥ 300

KB - 2 AVX 10 1100 ± 50 700 ± 50 ≥ 400

KB - 3 AVX 10 1650 ± 50 1050 ± 50 ≥ 600

KB - 2 AVX 13 1300 ± 50 800 ± 50 ≥ 600

KB - 3 AVX 13 1950 ± 50 1200 ± 50 ≥ 900

RB - 3 PK 400 ± 50 250 ± 50 ≥ 200

RB - 4 PK 500 ± 50 350 ± 50 ≥ 250

RB - 5 PK 600 ± 50 400 ± 50 ≥ 300

RB - 6 PK 750 ± 50 500 ± 50 ≥ 350

RIBBED BELTS

Belt
section

PH

PJ

PK

PL

Diameter of the

small pulley

db [mm]

≤ 25
> 25 ≤ 71
> 71 *

≤ 40
> 40 ≤ 80
> 80 ≤ 132
> 132 *

≤ 63
> 63 ≤ 100
> 100 ≤ 140
> 140 *

≤ 90
> 90 ≤ 140
> 140 ≤ 200
> 200 *

Initial

installation

90
110

200
200
250

300
400
450

800
1000
1100

After

30-120 min.

operation

4 PH 8 PH 12 PH 16 PH 20 PH

70
90

4 PJ 8 PJ 12 PJ 16 PJ 24 PJ

150
150
200

4 PK 8 PK 10 PK 12 PK 16 PK

250
300
350

6 PL 8 PL 10 PL 12 PL 16 PL

600
700
800

installation

TENSION VALUES MEASURED IN: NEWTONS [N]

After 30-120 min. operation

Initial

150
200

350
400
450

600
800
900

1000
1300
1400

STATIC TENSION T

After

30-120 min.

operation

130
150

300
350
350

450
600
700

800
1000
1100

Initial

installation

250
300

500
600
700

700
1000
1100

1300
1600
1900

NEWTONS [N]

MAX

After

30-120 min.

operation

200
250

400
500
550

600
700
800

1000
1300
1400

Initial

installation

300
350

700
800
900

900
1200
1300

1500
1900
2100

Minimum tension

Operating

after

run-in

250
300

550
650
700

700
900
1000

1200
1500
1600

Initial

installation

400
450

1000
1200
1300

1200
1500
1600

1900
2500
2800

After

30-120 min.

operation

300
350

800
1000
1000

900
1200
1300

1500
1900
2100