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Huvema HU 550 VARIO Manual

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CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
9.6. sTeady resT
The steady rest (fig. 33) serves as a support for shafts on the free tailstock end. For many operations, the tailstock can
not be used as it obstructs the turning tool or machine. The steady rest, which functions as an end support, ensures
chatter-free operation. The steady rest is mounted on the bed ways and is secured from below with a locking plate.
The sliding fingers require continuous lubrication at the contact points to prevent premature wear.
9.6.1. MoUnTinG sTead resT
• Loosen the 3 hex nuts (A, fig. 34).
• Loosen the knurled screw (B) and open the sliding fingers (C) until the steady rest can be moved with its fingers
around the work piece. Secure the steady rest in this position.
• Tighten the knurled screw until the sliding fingers touch the work piece. The fingers may not clamp the work
piece. Tighten the 3 nuts. Lubricate the fingers with machine oil.
• When after prolonged operation the jaw shows wear, the tips of the fingers may be filed or sharpened.
9.7. follow resT
The follow rest (fig. 35) is mounted on the carriage and follows the movement of the tool. The follow rest has two
sliding fingers. The place of the third finger is taken by the tool. The follow rest is used for turning operations on long
slender work pieces. It prevent flexing of the work piece under pressure from the turning tool. Set the fingers snug to
the work piece but not overly tight. Lubricate the fingers during operation to prevent premature wear.
10. adjUsTMenT
After a period of time, wear in some of the moving components has to be re-adjusted.
10.1. Main spindle bearinGs
The main spindle bearing were adjusted in the factory. If end play becomes evident after considerable use, the
bearing may be adjusted.
Loosen the screws (A, fig. 36) in the slotted nut (B) on the back of the spindle. Tighten the slotted nut until all the end
play is taken up. The spindle should still move freely. Tighten the screws (A) again.
Warning!
Excessive tightening or preloading will damage the bearings or will damage the motor because of
overheating.
10.2. cross slide/Top slide
Figure 37 – Cross slide
Figure 38 – Top slide
Each slide is fitted with a gib strip (C/F) which can be adjusted with the screws (D/G). These screws are fitted with
lock nuts (E/H). Loosen the lock nuts and tighten the screws, until the slide can be moved freely without play. Tighten
the lock nuts to retain this adjustment.
10.3. half nUT
Loosen the nuts (I, fig. 39) on the right of the apron and turn the screws (J) until both half nuts move freely without
play. Tighten the nuts again.
… 20 …


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