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Technical articles, repair guides and spare parts identification for TOS Trenčín and TRENS lathes. Here you will find practical information about maintenance, compatibility, part number differences and machine restoration for models such as SV18, SN40, SN50, SN63, SN71, SN400, SN500, SN630 and SN710.
SN400-SN500-SN630-SN710 longitudinal lead screw half nut replacement
Guide for replacing the nuts in the holders When cutting a lot of threads on your SN400-SN500-SN630-SN710 lathe, the half nuts will wear over time. This is standard, the half nut is a wearable part and needs replacing time to time. Compared to the SN40-50-63-71 the half nut on the SN400-SN500-SN630-SN710 lathes is composed of two parts. The [...]
3 point vs 5 point rapid traverse cam
3 point vs 5 point rapid traverse cam TOS Trenčín introduced the rapid feed traverse on their SN lathes, specifically on the late version of the B model. The main components of the first rapid feed was the evolved worm 883036, the 3 point cam 883147, the bushing 883035, the gear wheel 883025 and the worm gear 807049. [...]
SN400-SN500-SN630-SN710 plates
Replacing plates on SN400-SN500-SN630-SN710 Since the start of the production of the SN400, SN500, SN630 and SN710 in the early 2000's, the plates on these lathes have undergone several design changes. Because we cannot keep producing all the possible designs and plates' variations, we have unified both and created an universal design that fits each lathe model individually, [...]
Lathe gib replacement
Lathe gib replacement When the gibs (or strip piece as some are referred to) on your lathe wears out to a point when you cannot adjust them with screws , your carriage gains play and this causes the loss of accuracy. At this point your only option is the replacement of your gib with a thicker one. The [...]