Harmonic Drive Miniature Gear Units
Harmonic Drive Miniature Gear Units
Harmonic Drive’s CSF miniature gear-unit range offers shaft-input, direct-motor-coupled and ultra-flat arrangements. CSF-1U, 1U-F, 1U-CC, 1U-CC-F and 2XH use their own input and output interfaces, while CSF-2UP adds a cross-roller output bearing and a different axial package. These are precision reducers, not complete motor, encoder and drive assemblies.
Review Summary
Consider the CSF miniature range for a compact robot mechanism or machine axis that needs strain-wave reduction and an identified output support arrangement. Select the exact interface and load duty before choosing a size and ratio. Zero backlash does not mean zero elastic deflection, and the rated, repeated-peak and momentary torque columns must remain separate.
CSF-1U / 1U-F Input shaft; shaft / flange output respectively CSF-1U-CC / 1U-CC-F Direct motor-coupled square-flange arrangement; shaft / flange output respectively CSF-2XH-J / 2XH-F Direct coupling to motor shaft; shaft / flange output respectively CSF miniature output bearing The 1U/CC/2XH mini catalog specifies a four-point-contact ball bearing CSF-2UP Ultra-flat housed gear unit with cross-roller output bearing; motor mounting flange optional 2UP sizes / standard ratios Sizes 8 / 11 / 14; 30 / 50 / 100 ratios in the cited brochure Size 8, ratio 30 example 0.9 Nm rated at 2000 rpm input; 1.8 Nm repeated peak; 3.3 Nm momentary peak in the cited catalog Size 14, ratio 100 example 7.8 Nm rated at 2000 rpm input; 28 Nm repeated peak; 54 Nm momentary peak Selected standard accuracy Current CSF-8-30-2UP table: 2.5 arcmin; CSF-14-100-2UP: 1.5 arcmin; not a universal <1 arcmin family rating Mass examples CSF-8-30-2XH-F: 0.10 kg; -1U: 0.13 kg; -2UP: 0.20 kg in current tables Control scope External motor, feedback, amplifier and controller; exact input adaptation required Price Request a quote for exact unit, ratio, input interface and mounting-flange scope Applications and Industries
Consider the family for compact robot joints, semiconductor equipment and related precision machine mechanisms where the selected reducer’s ratio, load support and interfaces fit the actual duty. The gear unit does not include a complete robot joint, controller or machine safety function.
Manufacturing and automation
Request a quote for the exact configuration,quantity and delivery schedule.
| CSF-1U / 1U-F | Input shaft; shaft / flange output respectively |
| CSF-1U-CC / 1U-CC-F | Direct motor-coupled square-flange arrangement; shaft / flange output respectively |
| CSF-2XH-J / 2XH-F | Direct coupling to motor shaft; shaft / flange output respectively |
| CSF miniature output bearing | The 1U/CC/2XH mini catalog specifies a four-point-contact ball bearing |
| CSF-2UP | Ultra-flat housed gear unit with cross-roller output bearing; motor mounting flange optional |
| 2UP sizes / standard ratios | Sizes 8 / 11 / 14; 30 / 50 / 100 ratios in the cited brochure |
| Size 8, ratio 30 example | 0.9 Nm rated at 2000 rpm input; 1.8 Nm repeated peak; 3.3 Nm momentary peak in the cited catalog |
| Size 14, ratio 100 example | 7.8 Nm rated at 2000 rpm input; 28 Nm repeated peak; 54 Nm momentary peak |
| Selected standard accuracy | Current CSF-8-30-2UP table: 2.5 arcmin; CSF-14-100-2UP: 1.5 arcmin; not a universal <1 arcmin family rating |
| Mass examples | CSF-8-30-2XH-F: 0.10 kg; -1U: 0.13 kg; -2UP: 0.20 kg in current tables |
| Control scope | External motor, feedback, amplifier and controller; exact input adaptation required |
| Price | Request a quote for exact unit, ratio, input interface and mounting-flange scope |
