ESP STATIC-600V Manuel d'installation télécharger pdf (Page 7)

Mounting Split Taper Bushings in Split Taper Bushed

Pulleys

Pre- Installation

• Make sure the shaft, bushing barrel & bore, split taper pulley

bore, keys and keyways are free of burrs, paint, etc.

• The bushing may ﬁ rst be loosely installed into the split taper

bored pulley, and then the assembly slid onto the shaft.

For heavier pulley’s, it may be easier to either ﬁ rst slide the

bushing onto the shaft and then slide the pulley onto the

bushing; however, if the bushing barrel has collapsed, it

must be wedged open. See Figure 4.

CAUTION:

Excessive wedging forces in bushing saw slot may

damage or break bushing.

• It may be necessary to slightly wedge open the saw slot

(Figure 5) on some bushings in order to start the bore and

position the bushing onto the shaft. A narrow edged regular

screw driver may be used.

Pulley Installation

1. Align the keyway in the bushing bore with the shaft keyway

and install the key. Make sure the key runs the entire length

of the bushing bore. See Figure 5.

2. Position the pulley so the keyway in the bore is aligned with

the external (barrel) key in the bushing. NOTE: Bushings do

not have an external key. The threaded holes in the pulley

must be aligned with the non-threaded holes in the bushing

ﬂ ange. Insert the cap screws through the non-threaded

holes in the bushing ﬂ ange and thread them by hand into

the pulley three or four turns.

3. Position the bushing & pulley assembly axially on the shaft

such that it is aligned with its running mate. NOTE: Check

for adequate clearance between the assembly and other

nearby components (if applicable). Various shaft sizes are

listed in Table 5.

4. Install cap screws and tighten by hand ﬁ rst. NOTE: If cap

screws were provided with the pulley, use them instead of

the ones provided with the bushing. Since tightening the cap

screws may affect the axial position of the pulley, conﬁ rm

Split Taper Bushing

Split Taper Pulley

Cap Screws & Washers (3)

Keyway

Saw Slot

Figure 5. Split Taper Bushing & Pulley Assembly

Split Taper Pulley & Bushing

Components Assembled and

then Installed on Shaft

Split Taper Pulley & Bushing

Components Installed on

Shaft Individually

Figure 4. Split Taper Bushing & Pulley Assembly

Options

that the pulley is properly aligned with its running mate. If

not, determine how much the assembly must be moved into

proper alignment. Split taper tightening torques are listed

in Table 6.

5. If axial adjustment is required, ﬁ rst attempt to move the

motor sheave to properly align the drive belt.

6. Check installation gap. NOTE: There must be a gap between

the bushing ﬂ ange and the pulley face. If there is no gap

between them, disassemble the parts and determine the

reason(s) for the faulty assembly.

Pulley Removal

1. Remove all cap screws in sequence. If the bushing has a

keyway set screw, loosen it.

2. Insert cap screws in all threaded bushing ﬂ ange holes.

Tighten the cap screws against the (hub) face of the pulley

until the screw force releases the pulley from the bushing.

3. Remove the bushing and pulley from the shaft.

SHAFT SIZE

RANGE (IN)

LOWER

SHAFT

SIZE LIMIT

(IN)

SHAFT SIZE

RANGE (IN)

LOWER

SHAFT

SIZE LIMIT

(MM)

Above Through Above Through

– 1 1/2 -0.003 — 38.1 -0.076

1 1/2 2 1/2 -0.004 38.1 63.5 -0.102

2 1/2 4 -0.005 63.5 101.6 -0.127

4 6 -0.006 101.6 152.4 -0.152

6 8 -0.007 152.4 203.2 -0.178

8 9 -0.008 203.2 228.6 -0.203

9 — -0.009 228.6 — -0.229

Table 5. Shaft Size Limits for Split Taper Bushings

Bushing

SAE Grade 5

Cap Screw

Cap Screw Torque

Set

Screw

Size

Set Screw Torque

No. Size (in-Lbs) (Ft-Lbs) (N-M) (in-Lbs) (Ft-Lbs) (N-M)

G;H

2 1/4-20NC

95 8 10.7 - - - -

P;B

3 5/16-18NC

192 16 21.7 - - - -

3 3/8-16NC

348 29 39.3

5/16-18NC

165* 13.8* 18.6*

3 3/8-16NC

348 29 39.3

5/16-18NC

165 13.8 18.6

3 3/8-16NC

840 140 189.8

3/8-16NC

290 24.2 32.8

3 5/8-11NC

1680 140 189.8

3/8-16NC

290 24.2 32.8

4 3/4-10NC

3000 250 339.0

1/2-13NC*

620* 51.7* 70.1*

4 1-8NC

7200 600 813.5

1/2-13NC*

620* 51.7* 70.1*

Table 6. Split Taper Tightening Torques

1 2 3 4 5 6 7 8 9 10 11 12 ... 35 36

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ESP STATIC-600V Manuel d'installation Page 7

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